Turbotungsten
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- Jan 26, 2008
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At 11psi of boost AFR stays at a steady commanded 11.3 during WOT runs. When I gave my manual boost controller a twist I got 14psi of boost, but it went lean (about 12.7). I went home and adjusted the MAF Transfer function where needed and went out for another test run. It still went to 12.7 under full boost. Added more fuel (for a total of 18% in the needed areas) and still the same.
MAF counts are climbing, MAF volts are climbing, fuel pressure is staying a commanded 39, injector pulse width is climbing. I am at a loss as to why it's leaning out.
Spark blow out??? I would think this would show rich instead.
It's still pulls hard..maybe laying down just a smidge.
Any ideas???
Car is a single turbo 3v running 93 octane.
MAF counts are climbing, MAF volts are climbing, fuel pressure is staying a commanded 39, injector pulse width is climbing. I am at a loss as to why it's leaning out.
Spark blow out??? I would think this would show rich instead.
It's still pulls hard..maybe laying down just a smidge.
Any ideas???
Car is a single turbo 3v running 93 octane.