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Buell Forum » 1125R Superbike Board » Archives 001 » Archive through December 11, 2010 » TPS reset? Why/how do I know if it needs it? « Previous Next »

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Dbr0051
Posted on Tuesday, November 30, 2010 - 01:10 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I read how to do it but wondering when I should do it? I have put on the Erik Buell Racing ECM, pipe and KN filter, the noid is still there, I read w/the Erik Buell Racing ECM it doesn't do anything and it's OK to leave it, other than weight.


Thanks, Dave
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Milleniumx1
Posted on Tuesday, November 30, 2010 - 09:47 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Dave, I've never needed to do one when installing my E B R unit. But that's not to say you wouldn't need to. If it's right in Diag mode, it's good to go.

Go into Diag mode (hold Toggle and Mode) buttons down simultaneously, turn key from Off to On. You can toggle to TPS settings. One is percentage, one is voltage.

On the percentage screen, it should read 2% with no throttle applied. Twist the throttle to WOT, and it should go to 100%. It should also increment smoothly as you twist from no throttle applied to WOT.

If it's not tracking 2% - 100%, then you need to do a TPS reset. And you're correct, with the E B R unit, your noid isn't going to engage. Weight ... Somewhat less than a McDonald's Happy Meal ; )

Mike
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Pmjolly
Posted on Tuesday, November 30, 2010 - 08:48 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Mine was running fine, but I decided to try it just to see what would happen. You are supposed to cycle between fully open and fully closed throttle. I must have done something wrong. I think it was the fact that I let the throttle slam shut by its spring. When I tried to start it after the reset,it would not start. I tried several times, then it backfired so loudly I thought for shure it blew apart my carbon fiber exhaust canister. I did another reset. That time I carefully opened and closed he throttle. It started right up that time. I later installed the Erik Buell Racing ECM. I did another reset per instructions on this forum. It has been running fine since.
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Gbaz
Posted on Saturday, December 11, 2010 - 08:56 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Erik Buell Racing sent me this
Two things need to be done after install of this race ECM to make sure everything works properly:

1) TPS re-set
1) Turn the key on and make sure kill switch is on run. Leave this way until step
2) Do not start bike.
3) Turn throttle to full open and hold about one second.
4) Release throttle completely so it snaps shut. Wait one second.
5) Repeat the steps 3 and 4 (full throttle, hold and release) two more times.
6) Turn the key off for at least two seconds.
7) Then you can turn on and start.

2) IAC averaging re-set
Start bike and let it idle for ten minutes.

do both
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Pmjolly
Posted on Saturday, December 11, 2010 - 11:44 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I did both the throttle reset and the AIC re-set when I got the race ECM. It has been running great ever since.
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Ratbuell
Posted on Saturday, December 11, 2010 - 12:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Any time you change the computer, you have to tell it where "off" is on the throttle position sensor.

In simple terms the TPS is a volume knob. The computer needs to know what value (electrical) equals closed throttle (mechanical) and open throttle in order to give the rest of the engine the right signals (spark advance, fuel amounts, etc).

If its baseline is inaccurate, the whole RPM range will be inaccurate.
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