klfutrelle

My percentage at idle is reading 18%. Is that normal? I have just a few bolt-ons.

cliffyk

Percentage of what? [/align][/align][edit][/align][/align]It just occurred to me that you must be talking about % or throttle opening.TPS is not generally expressed that way on the EEC-V system, generally it's provided in Volts. For example, on a recent logged run my TPS voltage ranged from 0.958 V to 4.65 V.[/align][/align]The EEC-V continuously monitors the TPS output and saves the lowest value measured as being closed throttle (this is called a "ratch" action, a reverse latch). I suspect the instrument reporting the throttle position as a percentage is using an incorrect formula to provide that value.[/align][/align]If you take my log numbers (0.958 to 4.65 V) then 0.958 is 20.6% of 4.64. However since 0.958 IS closed throttle the real calculation should be (0.958 - 0.958) / (4.65 - 0.958) = 0.0%.[/align][/align]I have never monitored the generic TP PID (PID 0111) which is supposed to be a percentage, I will do that next time I log...[/align]

blackstallion666

even when your not pressing the throttle. Itis still partially open. I think your reading is ok.

ackuric

that seems right, do the calculations yourself, if you want go check your tps voltage with the throttle closed and then when opened, should be around 1 volt rounded up while closed and 4.5 open, which would make for about 18 percent at idle.

klfutrelle

Thanks guys!