Voes harley

Right side near the battery cover. I got the switch for the Dyna I worked on from New Castle H-D, p/n 71428-90B. You also need your 4 digit key code that's stamped on the key, pull the plastic cover off the key. If you contact a Harley dealer for the switch verify the part numbers match your bike model.

Plugged the VOES hole in the CV carb (Instructions say this is important if not running VOES). ... Shop our complete selection of Harley-Davidson Motorcycle parts and accessories including the Drag Specialties Transparent Timing Hole Plug - DS-196040. www.denniskirk.com Save Share. Like. Kherb1990 Discussion starterMost people do not set the VOES unit. They simply purchase a new one that is already set by the factory. However, since the FLHCU is a heavy bike, I'd set the VOES at about 5-5.5 inches of vacuum. If the bike spark knocks when you roll on the fuel in high gear, try taking to a bit higher setting like 6-6.5.Product Description. Vacuum-Operated Electrical Switch (VOES) from Drag Specialties for your Harley. Custom VOES are available with 3", 4", 5" and 6" HG activationSwapped out the Harley Carb for an S&S Super E. With my excitement to swap I didn't track the vacuum line that was on top of the old carb that went to the VOES. After reading a bunch of threads, I would like to keep the VOES. My manual shows the line coming off of the carb (now intake manifold with the S&S) to the VOESAccel Super Coil For Harley Twin Cam With Fuel Injection 2001-2017 $ 222. 26 $ 246.95. 10% savings. Free Shipping. 49. Vehicle Specific. Terry Components 1.5 kW Heavy Duty Starter Motor For Harley Twin Cam 2006-2017 $ 404. 96 $ 449.95. 10% savings. Free Shipping. Vehicle Specific. Drag Specialties H-2 Conventional 6V Battery Kit $ 86. 95.However it would appear from the instructions you do not need to have the VOES but may well need to select the best curve and possibly adjust the ignition timing to get the best set up with this not being able to adapt to changes in load detected by the VOES. View attachment 1192970. Yes this was my interpretation of the installation …Additional service available. 1-year accident protection plan from Allstate - $10.99. Breathe easy. Free shipping and returns. Shipping: Free 2-4 day shipping. Get it between Fri, Feb 16 and Tue, Feb 20 to 23917. See …This Super E Carburetor kit is designed to have all components needed to install the carburetor and Teardrop air cleaner for specific model motorcycles. See Additional Information below for complete fitment. Made In the USA. Kit Includes: Super E carburetor S&S intake manifold (For engines with stock length cylinders) Teardrop air cleaner kit ...

Feb 4, 2018 · SCHMIDTY. 29125 posts · Joined 2009. #5 · Feb 5, 2018. To disable the VOES to check timing simply clamp the hose shut so the VOES doesn't get vacuum from the carb. That's also a simple test to see if the VOES is functioning, watch the timing mark and unclamp the hose, if the mark moves the VOES is functioning. Harley-Davidson's reporters lower-than-expected quarterly sales. Recently, Harley-Davidson CEO Matt Levatich and Polaris CEO Scott Wine shared the stage at the recent AIMExpo i...Part No: 2101-0006 Replaces Harley Davidson Part: 26566-91 Available as stock OEM replacement or custom applications with mounting bracket. Custom VOES are available with 76.2 mm, 102 mm, 127 mm and 152 mm (3”, 4”, 5” and 6”) HG activation. Email for Price. Fits: Dyna Low Rider Convertible FXDS : 1994–1995How do the charts look now? Let's check....SHOP For his second "Executive Decision" segment of the Wednesday night Mad Money show, host Jim Cramer spoke with Harley Finkelstein...In a report released today, Gerrick Johnson from BMO Capital assigned a Buy rating to Harley-Davidson (HOG – Research Report), with a pric... In a report released today, Gerr...Jul 20, 2004 · The Shovelheads weren't originally fitted with the VOES since most of them were low compression and generally they do not have problems with pre-ignition. Mine is 7.5:1 ratio. So, I think your problem is simply too much advance coupled with the missing VOES. By the way, don't throw that VOES out, a new one costs $65.00! Good luck on this. VOES Switch for Super Stock® Ignition. VOES Switch for Super Stock® Ignition. Item #: 55-1248. 0.0 out of 5. 0 reviews | Write a Review. $101.95. Qty: Add To Cart. + Add To Favorites. This results in increased fuel economy and improved part throttle drivability. When under heavy acceleration, and engine vacuum is low, the switch opens, causing the Dyna 2000 to follow a slower advance curve. This helps to reduce detonation under heavy loads. More heavily modified motors can benefit from using the VOES switch wires in the ...

Feb 10, 2014 · Some add more advance with it grounded, some bring it in a lot faster with the wire grounded, some do both. But regardless, the ones I know give 30-35 degrees advance, not 10, with or without VOES. 1971 Sprint SS350 project; 1982 FXR - AMCA restoration; 1998 Dyna Convertible - 100% Original; 1979 FXS 1200 shovelhead; The green VOES/RTD LED lights when the violet wire is grounded. With the ignition in normal mode and the VOES connected, the green LED. will be on most of the time (engine vacuum present). In Retard Mode, the LED can be used to check operation of the retard controller. (See. RETARD MODE USING THE VOES WIRE below.) Leave the gun. Take the cannoli .The only remaining VOES related step, is to attach the vacuum hose that you installed on the carb or manifold during an earlier step. To do this, slide a hose-clamp onto the hose, work the hose onto the nipple of the VOES, and then secure the clamp. See photo below. Note: The hose-clamp is actually optional.Jan 30, 2007 · When at idle, the vacuum will be lower, or 6 in Hg or below, then ignition timing will retard accordingly. Most older Harley engines with carburetors have ignitions with two ignition map curves. One for low speed, and low throttle riding or idle, and an advance curve when passing cars or just going WOT or wide open throttle.

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What is the Vacuum Operated Electrical Switch (VOES)? What does it do and why is it there? All Harley Davidson motorcycle carbureted models since the 1984 …Here’s a largely misunderstood part. The Vacuum Operated Electric Switch (V.O.E.S.) was standard equipment on all Evolution® engines and works in conjunction with most all late …The Shovelhead engine, manufactured from 1966 to 1984, has models that have given riders a hard time due to recurrent issues. The primary culprits are the 1967, 1978, and 1983 models. These models suffered from a myriad of problems, including oiling, electrical, and starter issues. The following sections will delve into the specifics of these ...HARLEY DAVIDSON 26555-94 Voes. fits model: Touring, Flht, Fl, Glide, Electra. make: Harley. year: 1994. ( Brand: Harley Davidson ) Review HARLEY DAVIDSON Voes fits GLIDE ELECTRA TOURING FLHT FL 1994. The part should fit other years model's as well please investigate this prior to buying. We are RSI parts inc. RSI parts cannot guarantee …

exact fit. .1035 in. - .1045 in. Left Side Crankcase Bearing Spacer - A-9126 Eastern Motorcycle Parts. $3.02. Part #: 146116 Mfg Part #: A-9126. Results per Page. Viewing Results 1 - 40 of 602. Shop for 1997 Harley-Davidson Heritage Softail Classic - FLSTC Engine Components at Dennis Kirk.In this video, Fix My Hog Expert Bob explains why the Harley VOES is an important function and explains how to test the VOES switch.11187 posts · Joined 2014. #8 · May 1, 2018. you can go up and down a bit as needed,,, just watch for very light ping, under moderate load,, below 3k rpm.. when it begins to ping,, knock it back a couple of degrees,,, advance causes more power in low rpm,, less advance causes more power above 4k rpm,,, all depending on the cam nd compression.Logged. Re: VOES Switch. February 06, 2020, 07:23:49 PM #2. VOES is part of the ignition, so changing to any carb other than stock is moot point. If you like a loppy idle remove it, if you want decent performance and mileage keep it. Make sure the older VOES is not leaking vacuum as that is a common problem. Put a large vacuum cap on …SOURCE: finding a 1983 harley carb with VOES tube The original carb on a 1983 XLH was a Kehien "butterfly" type carb as opposed to the current Kehien "CV" type carb. You can find a replacement carb but you're going to look real hard for it and when you find it, it may have the same problem your carb had. For full functionality of this site it is necessary to enable JavaScript. Here are the instructions how to enable JavaScript in your web browser. Home › Inventory. Inventory. Search. Brand. Harley-Davidson®. HD. Family. Adventure Touring. Cruiser. Grand American Touring. Softail. Sportster. Trike. Model type. …Buy Standard Vacuum Operated Electrical Switch for Harley Davidson 1983-90 XL, XLS,: Ported Vacuum - Amazon.com FREE DELIVERY possible on eligible purchases ... My 1988 FXRP never came with VOES or electronic ignition. I added this switch when installing an Ultima single fire ignition. You get more power when the …Buy Standard Vacuum Operated Electrical Switch for Harley Davidson 1983-90 XL, XLS,: Ported Vacuum ... My 1988 FXRP never came with VOES or electronic ignition. I ...April 29, 2020, 09:51:37 AM #3. Using a My-T-Vac and an ohm meter, the VOES should read open and 0"Hg, and closed (0 ohms) around 3-4" Hg. One thing to try if you think it is leaking, put a rubber cap over the 'nose' of the VOES. They are potted sealed, but very often with heat and age, that potting cracks and voila, leak.Twin Tec ignition Model 1005 is intended for use with Harley-Davidson Evolution type motorcycle engines. The Model 1005 replaces the original equipment (OE) electronic ignition system on 1978-99 models. The unit mounts in the gear case cover and uses the standard H-D timing rotor.Checked the compression, checked the pushrods and the valves to see if they were opening. Put in new exhaust seals. Checked the timing, checked the coil. The VOES is working correctly. I've got good fuel flow. I even put another CV from my buddy's bike on and no difference.

Screamin'Eagle ignition module on 1340. 1996 Evo RoadKing. Looking to fit a S.E. ignition module with a better advance curve and get rid of the blasted VOES switch. Previous experience is on 1995 and earlier models. Does the S.E. Racing Ignition module OEM 32421-94 get rid of the VOES and what's the fitting details and what …

Find the Drag Specialties Vacuum Operated Electrical Switch (VOES) - 2101-0005 at Dennis Kirk. Shop our complete selection of Harley-Davidson Motorcycle parts and accessories including the Drag Specialties Vacuum Operated Electrical Switch (VOES) - 2101-0005.Refer to the applicable Harley-Davidson Service Manual for detailed instructions to remove necessary components. 1. Remove air cleaner, carburetor, and manifold according to Service Manual instructions. 2. If vehicle is equipped with electronic ignition and a map sensor, install map sensor to performance intake manifold. 3.The dynatek IS an ignition module and cam position sensor in one. You would wire the Dynatek directly to the coil and the VOES and a ground or whatever the instructions say. There should basically be just a handful of wires, the instructions will tell you what wires and how and how to find them. Don't wire it into your existing ignition …2000 883 VOES question. I got a 2000 883 hugger and i broke the VOES switch, im trying to get a new one and now im finding ones that say 6in and 5in or 4in. Im not sure what one i need, or even what the big difference is. I know it has to to with the timing but thats about it. any help would be great, thank you.Carburetor parts for original Harley (Keihin) CV 40mm carburetors. Products 1-53 of 53. Show. Featured! Sale: $18.95.ULTIMA® #53-644 Programmable Digital Ignition System • DESCRIPTION The Ultima® Digital Ignition is designed to provide the correct curves and total timing for Ultima enginesand other larger cubic inch or high performance engines. These units will also replace the OEM HD® factory ignition module and sensor used on 1983 and later Harley …Anything and everything related to Harley-Davidson motorcycles and the people who ride them. ... Members Online • OctoberRust13. ADMIN MOD Does this other hose coming …Wiring Diagram 1989 Harley Sportster. By Admin | December 23, 2017. 0 Comment. Ignition components dimmer switch diagram the 1947 present chevrolet gmc truck message board network harley davidson wiring diagrams manuals motorcycles manual pdf fault codes 1995 flstc forums need a for 1987 883 sportster project voes …May 25, 2015 · Senior Member. May 25, 2015. #2. the VOES advances your timing after about 2k rpm or 5-7 #'s vacuum. IF your timing plate is at max then you are probably running to far adv. all the time, even at idle. There are after Mkt. set ups to run w/ or w/o a Voes.

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PJ1 - 17-KGO - PJ1 Spray Paint, 11oz. Aerosol - Kawasaki Green 88-02. Find many great new & used options and get the best deals for 1996+Harley+Davidson+Dyna+Wide+Glide+1500+VOES+Vacuum+Switch+26569-96 at the best online prices at eBay! Free shipping for many products!Buying a used Harley Trike is an exciting experience, but it can also be daunting. With so many options available, it’s important to know what to look for when shopping for a pre-o...The VOES (Vacuum Operated Electrical Switch) is an electric switch activated by the carb vacuum. It's specific purpose is to retard the ignition when the motor is running under high load (low vacuum) conditions. The VOES is a normally open switch. ... I started out using the Harley VOES system but the TPS is what talks best with the Yamaha ...Dyna 2000i-P Reprogrammable Digital Ignition SystemThe VOES is a normally open switch. With low vacuum the switch is open. With higher vacuum, the switch closes, connecting the ignition module lead to ground. Some aftermarket ignitions such as the DYNA 2000, bypass the VOES altogether. Others allow it's usage. The real problem though is that the VOES is calibrated to specific levels of vacuum.Oct 20, 2014. #8. the vacuum hose in question goes to the vacuum nipple at the base of the carb. the hose going into the nipple has a 45 degree bend and is all cracked. the vacuum hose in question starts at the VOES runs to the carb then has a plastic Y part of the Y goes to the base of the carb and the other part of the Y goes to the petcock ...This information is for a late Harley Evo Softail but will hole true for most all Evo's. The wire coloring and the electronic module may be different but ho...Swapped out the Harley Carb for an S&S Super E. With my excitement to swap I didn't track the vacuum line that was on top of the old carb that went to the VOES. After reading a bunch of threads, I would like to keep the VOES. My manual shows the line coming off of the carb (now intake manifold with the S&S) to the VOESAug 3, 2021 ... Reassembling your carburetor in great detail after cleaning or rebuilding.And that is what the VOES does - it detects high vacuum and tells the black box to advance the timing. The VOES is connected by a hose to a fitting on the intake manifold or …In Wednesday's Analysts' Actions, TheStreet highlights an upbeat note on CarMax (KMX) along with a couple of downgrades on Harley-Davidson (HOG) and Tesla Motors (TSLA) by ... ….

VOES advandces timing. Some are adjustable. There's a screw to adjust (vacuum pull off) inside the vacuum nipple. Not sure if yours is adjustable or not. You could go with a 4", it may be an issue with fuel octane. Pipes and air cleaner aren't an issue. Changing cams would be an issue. Personally, i'd use the 4".Vacuum-Operated Electrical Switch (VOES) from Drag Specialties for your Harley. Custom VOES are available with 3", 4", 5" and 6" HG activation; Sold each; Additional Information. 3" 2101-0007 4" 2101-0009 5" 2101-0010 6" 2101-0011 ...Wiring Diagram 1989 Harley Sportster. By Admin | December 23, 2017. 0 Comment. Ignition components dimmer switch diagram the 1947 present chevrolet gmc truck message board network harley davidson wiring diagrams manuals motorcycles manual pdf fault codes 1995 flstc forums need a for 1987 883 sportster project voes …Part No. DC1·1, or stock Harley coil, or Screaming Eagle Harley coil. For dual plug applications, 2 DC2-1 or DC5-1 coils wired in series can be used. 1. Locate the stock ignition module and remove it from the bike. Remove the outer and inner covers on the cam position sensor. Mark the center of the actual sensor on the inside of the engine case.The VOES is a normally open vacuum operated switch that closes under 3-5" of vacuum. The switch is connected to a lead from the ignition module. Under high vacuum, 3-5 inches or higher, the switch closes. A lead from the switch to ground closes a circuit in the ignition module. This circuit advances the timing of the spark.Engine Mechanical Topics - VOES Switch Explained - What is the Vacuum Operated Electrical Switch (VOES)? What does it do and why is it there? All Harley Davidson motorcycle carbureted models since the 1984 model year have used the VOES to improve throttle response, increase MPG, and meet EPA...Find the Drag Specialties 26558-84 Vacuum-Operated Electrical Switch VOES for Harley for Harley models at Get Lowered Cycles. Fast, Free shipping and the best customer service.If VOES is not used, either tape up violet wire o rconnect to g ound d ep nding on application. MODE ADV ANC ER T X10 0 RPM LIMIT X1 0 S&S/Viola V-Twin 550-0500 Figure 2 O.E. WHITE WIRE TO COIL + GROUND RPMX100 – + A 12 VOLT B TTERY IGNITION SWITCH +12V VOES (VACUUM SWITCH) BROWN HI-4N IGNITION HI-4N …Should I use the VOES on my late model Harley with the Dyna 2000i? Most stock or mildly modified Harleys will benefit from the use of the VOES. The way the system works is; at part throttle or cruising speeds, when engine vacuum is high, the switch is closed and the ignition is at full advance by 1500 RPM. This results in increased fuel economy ... Voes harley, Drag Specialties Vacuum-Operated Electrical Switch VOES for Harley - Repl. OEM #26558-84; Drag Specialties. Drag Specialties Vacuum-Operated Electrical Switch VOES for Harley - Repl. OEM #26558-84. $60.95. SKU: 2101-0004 UPC: Availability: Ships Within 1-2 Business Days. Current Stock: ..., It might be VOES related as it may not be pulling fuel into the carb. The original set-up with the stock (pre-cv) carb was a vacumm line from the Voes, to a T-clamp that branched to the carb and the hypercharger A/C. the VOES nilet on the intake maknifold was blacked off. ... V-Twin Harley Davidson forum. Discussion on V-Twin Harley …, Doc Harley from the Service Clinic at Low Country Harley-Davidson to help you with the health of your motorcycle! This week shares a tech tip for older motor..., There are no electrical connections on the carb. And there is no VOES on a 2006. There is a manifold absolute pressure sensor in the intake manifold. It connects to the ignition control unit through the main harness. There should be a weather sealed connector close by that plugs into it. WiSeNhEiMeR -1369 and donnamcdaniel1103., In Wednesday's Analysts' Actions, TheStreet highlights an upbeat note on CarMax (KMX) along with a couple of downgrades on Harley-Davidson (HOG) and Tesla Motors (TSLA) by ..., 2000 883 VOES question. I got a 2000 883 hugger and i broke the VOES switch, im trying to get a new one and now im finding ones that say 6in and 5in or 4in. Im not sure what one i need, or even what the big difference is. I know it has to to with the timing but thats about it. any help would be great, thank you., Spiderman. VOES Issues. The Vaccum Operated Electrical Switch is the trigger mechanism for all Evolution style Harley-Davidson engines using V-Fire III style ignition. In brief it takes a vacuum reading from the intake and converts it into an electrical signal that is sent to the ignition module. The unit sits between the cylinders usally ..., harley voes switch. dometic vacuflush. vacuflush parts. voes switch harley. electric vacuum switch. Next page. WARNING: California’s Proposition 65 . Product Description . Standard Motor Products Vacuum Operated Electrical Switch. Product information . Technical Details. Connector Type ‎Crimp :, The words Harley®, Harley-Davidson®, H-D®, Sportster®, Evolution®, and all H-D part numbers and model designations are used in reference only. S&S . ... VOES tubing and additional hardware (when applicable) Installation and jetting instructions. CHROME PLATING THE CARBURETOR., Drag Specialties Vacuum-Operated Electrical Switch VOES for Harley - Repl. OEM #26558-84; Drag Specialties. Drag Specialties Vacuum-Operated Electrical Switch VOES for Harley - Repl. OEM #26558-84. $60.95. SKU: 2101-0004 UPC: Availability: Ships Within 1-2 Business Days. Current Stock: ..., The words Harley®, Harley-Davidson®, H-D®, Sportster®, Evolution®, and all H-D part numbers and model designations are used in reference only. S&S . ... VOES tubing and additional hardware (when applicable) Installation and jetting instructions. CHROME PLATING THE CARBURETOR., Harley Davidson trikes are a great way to experience the open road in style. Whether you’re looking for a classic ride or a modern machine, you can find a used Harley trike that fi..., From Dyna: Most stock or mildly modified Harleys will benefit from the use of the VOES. The way the system works is; at part throttle or cruising speeds, when engine vacuum is high, the switch is closed and the ignition is at full advance by 1500 RPM. This results in increased fuel economy and improved part throttle drivability., Should I use the VOES on my late model Harley with the Dyna 2000i? Most stock or mildly modified Harleys will benefit from the use of the VOES. The way the system works is; at part throttle or cruising speeds, when engine vacuum is high, the switch is closed and the ignition is at full advance by 1500 RPM. This results in increased fuel economy ..., This VOES was goodA basic off the cuff voes test, the voes picks up the inlet air flow ( like a MAF ) and sends the info to the CDI ( ignition computer ) for..., Get Free 2-Day Shipping and $15 + 5% RPM Cash on this order. Already enrolled in RPM? Link your existing membership here. Join Now Learn More. Pick up your Standard Motor Products VOES Switch For Harley 1982-1999 for $66.70 today., Doc Harley from the Service Clinic at Low Country Harley-Davidson to help you with the health of your motorcycle! This week shares a tech tip for older motor..., Jan 4, 2024 ... Comments50 ; Got A Rough Idle? Could be a faulty VOES. · 12K views ; Top 5 mistakes beginner Harley riders make in traffic #harleydavidson # ..., The shifting pattern on Harley-Davidson motorcycles is “one down, four up” (or “one down, five up” for six-speed bikes). In other words, the first gear is located below neutral and..., Quick Tip On How To Easily Rebuild Accelerator Pump On S&S Super E Carb For Harley DavidsonsPlease Like & Subscribe, 1.) If using the stock ignition module and stock pick-up: No. It changes your timing curve via vacuum (The VOES is a vacuum switch) through the ignition module. 2.) See #1. 3.) No. It adjusts timing elctronically (advances). Using another ignition set up may do this, but not with the OEM parts., Harley-Davidson will release figures for Q4 on February 2.Wall Street analysts expect Harley-Davidson will release earnings per share of $0.071.Go... On February 2, Harley-Davidson..., Quick Tip On How To Easily Rebuild Accelerator Pump On S&S Super E Carb For Harley DavidsonsPlease Like & Subscribe, VOES connected, the green LED will be on most of the time (engine vacuum present). In Retard Mode, the LED can be used to check operation of the retard controller. (See RETARD MODE USING THE VOES WIRE below.)!!!! V.O.E.S. SWITCH All late model Harley-Davidson engines incorporate a Vacuum Operated Electric Switch (VOES) in the intake, derosnopS. Harley Davidson Touring VOES Vacuum Sensor Switch and Bracket P/N 26555-94 D1. Pre-Owned. $69.99. alilofthisandthat75 (659) 99.7%. or Best Offer. +$14.80 shipping. derosnopS. Drag Specialties Vacuum-Operated Electrical Switch VOES OEM # 26558-84 Harley., Here’s a largely misunderstood part. The Vacuum Operated Electric Switch (V.O.E.S.) was standard equipment on all Evolution® engines and works in conjunction with most all late model electronic ignitions, both factory and aftermarket. It senses high and low manifold vacuum and signals the ignition to change its advance slope. Under high load, the switch signals the ignition module to ..., VOES Switch for Super Stock® Ignition. VOES Switch for Super Stock® Ignition. Item #: 55-1248. 0.0 out of 5. 0 reviews | Write a Review. $101.95. Qty: Add To Cart. + Add To Favorites., The Dyna 2000 Digital Ignition system for Harley-Davidson motorcycles is a plug-in upgrade to the electronic advance ignition found on late model Harleys. This ignition is microcomputer controlled, generating extremely accurate control over the entire ignition process. The Dyna 2000 is without question the most sophisticated and capable ..., There are two ways to see if the VOEs is working properly. First things first is to ensure that you do not have an intake leak. To do so, simply bring the bike up to operating temp - OP Temp- . (ride for a bit them perform test) Once at OP Temp spray some carb cleaner directly at the intake flanges. Also, spray some at the VOEs which is located ..., If VOES is not used, either tape up violet wire o rconnect to g ound d ep nding on application. MODE ADV ANC ER T X10 0 RPM LIMIT X1 0 S&S/Viola V-Twin 550-0500 Figure 2 O.E. WHITE WIRE TO COIL + GROUND RPMX100 – + A 12 VOLT B TTERY IGNITION SWITCH +12V VOES (VACUUM SWITCH) BROWN HI-4N IGNITION HI-4N …, Find the Drag Specialties 26566-91 Vacuum-Operated Electrical Switch VOES for Harley for Harley models at Get Lowered Cycles. Fast, Free shipping and the best customer service., What is the Vacuum Operated Electrical Switch (VOES)? What does it do and why is it there? All Harley Davidson motorcycle carbureted models since the 1984 model year have used the VOES to improve throttle response, increase MPG, and meet EPA requirements for emissions. The VOES is a motorcycle part described as a vacuum ignition retard device., Checked the compression, checked the pushrods and the valves to see if they were opening. Put in new exhaust seals. Checked the timing, checked the coil. The VOES is working correctly. I've got good fuel flow. I even put another CV from my buddy's bike on and no difference.