WS6FirebirdTA00

iTrader: (33)

ok so who has a problem with the idle trims changing after you drive for a while. i can cold start my car and my idle trims after running for a little are about +0.20 give or take and then when the car is hot and the oil temp is up the idle trims go to about -0.30 give or take. this is with only about a max of 5* intake air temp change. IAT is right around 108-111*F (sorry for the changing units) i dont know what to do about this cause that seems kinda screwy to me...ideas?

WS6FirebirdTA00

iTrader: (33)

anyone?

gametech

iTrader: (1)

That symptom usually would point to a flawed iat reading. Sometimes the iat would heat soak with the car sitting still. The iat can read higher than the actual intake air temps. This is not always the case, however. For some reason I have seen where if your ifr values are wrong, then you adjust the ve table to compensate, the trims change a lot dependent on ect. I have no idea why this happens. I'm not a pro tuner, I'm just giving some observations based on 5 or 6 vehicles I've tuned between me and friends, but since no one else responded, I thought I'd chime in.

WS6FirebirdTA00

iTrader: (33)

thanks for the reply. the ifrtable is right i know that much, ive got the exact specs on the injectors from bosch. ill try and look into the heat soaked iat sensor and see if i notice anything, thanks

WS6FirebirdTA00

iTrader: (33)

ok well we went out for a ride again and i chaged some of the settings based on iat and it didnt do ****. cold start up i am having not enough air and hot idle at the same 180* temp i am having too much air. i am thinking the oil temp is really causing the problems here. so i may just meet somewhere in the middle of the 2 until i get some answers on what to do.

has anyone else had these issues? i am pretty sure the iat temp is right, it said 110*f and its about 90-95 out right now

GuitsBoy

iTrader: (4)

I definately notice the same thing going on. but I have the worlds most F*ed up idle, so dont go by me.