Simple tuning for idiots

Simple tuning for idiots

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jonbarrett

Original Poster:

800 posts

204 months

Thursday 5th July 2007
quotequote all
Lets get this right from the start, I'm the idiot.

I've plugged my ECU into the laptop and as if by magic I can see what the engine is actually doing in real time. It's amazing and I feel like I own a real racing car. The problem is the adaptives are saying -20 and -10 all the time. From reading other posts this seems to be wrong.

So what are my variables?
a) Offside idle screw which sets the offside butterfly position. (Controls offside airflow at idle).
b) Link arm between throttle banks. (Controls nearside butterfly position relative to offside butterfly. Used to balance airflow through both banks).
c) Throttle potentiometers. (Tells the ECU the angle of the butterfly. Controls which ECU map is selected for a specific butterfly angle.)
d) ECU maps

1) Get something to measure airflow. Is it called a spirometer? If so what is it and where do I get one?
2) Detatch the link arm and set the correct airflow on the offside bank using the idle screw. (What airflow am I aiming for?)
3) Reconnect the arm and adjust the nearside airflow to match.
4) Adjust the throttle potentiometers until I find a map that sets the adaptive to 0.
5) Keep my fingers crossed that the adaptives remain at 0 through the rev range. (If they are not, and the linkage, pots, lambdas etc are OK, it must be the map.)
6) Take to someone who knows what they are doing.

Please tell me I'm on roughly the right track because my brain is small.





This is what I do next. Detatch