95211, RE: tuning question . please help .
Posted by ner947, Dec-31-69 06:00 PM
Originally posted by boosted60trimrst
also with partial throttle up to around 4000 rpm it is lean fom 13.0 up to 15.0 at some points .but at wot and anything 4500 up it reads from 11.8 to 12.8 . any ideas on these problems ?
That's your stock ECU screwing with you. Once you get a wideband and you are able to see how horrible the AFR is with the stock ECU, it's extremely difficult to tune it out with an AFC or with fuel pressure... a wideband is the first in the slippery slope to a standalone at which point your car can finally be tuned well.
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