| Author | Message | ||
     Mmmi_grad |
Do i need to install the race ecm too? If i slip on the muffler I probley need a tps reset right? then what ????????????? will my bike run lean without the race ecm?? My bike only has 1200 miles on it??????????/ thanks | ||
| Blake |
Probably will run a bit lean as far as optimum HP is concerned, and possibly at highway speeds where you might risk detonation and holing a piston as a result. No need for a TPS reset unless you put an ECM on your bike that has never before been on and set for your bike. The TPS reset is actually just a procedure to tell a new (to your bike) ECM the voltage output of the throttle position sensor for when the throttle is fully closed and fully open. On account of the TPS voltage kind of is what it is, meaning there is not one specific highly accurate voltage to which all TPS's on all bikes are set at the factory. They vary from one bike to the next, on account of they aren't set to a specific tightly toleranced voltage when they are installed. Maybe they should be? I Dunno. But they aren't and the voltage output in the throttle closed condition can vary widely between different bikes, thus the ECM must be told the voltage for the throttle closed condition for whatever bike it is installed on. That's what the TPS reset routine does. You unscrew the idle adjuster so that the throttle plate will close fully, then open it and let it snap closed to be sure it is firmly seated and completely closed, then tell the ECM, "hey you see that voltage value?"... "Yeah that one right now! That is the voltage output of the TPS when the throttle is 100% completely closed. Remember that, and store it for use in shoosing the proper fuel and timing maps wrt throttle position as indicated by TPS voltage, okay?" Great! Let's ride!  Crazy huh? Yeah, I do talk to my bike. ![: ]](http://www.badweatherbikers.com/buell/clipart/proud.gif) | ||
| Mmmi_grad |
but but but the os sensor wont adjust for the increased flow and give the injectors more gas???  | ||
| Spiderman |
It may, it may not. You ECM needs to learn what just happened to it and the only way for that to happen is a TPS re-set. It may run but it won't be right, get the stuff on, get the TPS re-set an you will be A O K IE... Knew a guy who thought he would be bad an throw a Force intake on his FI S3, bike ran at a hiiiigh idle, and when he turned the idle down it wouldn't run. One TPS and AFV re-set later and he was runnin fine. | ||
| Sportsman |
I'm not trying to challenge Blake BUT, my personal experience with my 99X1 when I bought a V&H slip on. It popped and wouldn't come close to running right and I ended up setting it on a shelf cussing V&H. Finally they came out with a race ECM to complete the package and with a TPS reset, it's ran perfect ever since. Get the Race ECM. | ||
| Mmmi_grad |
thanks ya all guess ill have to play it on the safe side and at least plan a tps reset. Sounds like changing the ecm to the race ecm is still a controversial subject. I wonder what vance and hines thought on that was ?????????? | ||
| Spiderman |
They can think al they want, but if you want your bike to run right with any performance mods get the race ECM. You wouldn't go to Thanksgiving Dinner with out your baggy pants. |
