Quote:
Originally Posted by JAAY
Yes I am leaning out the mixture to a safe ratio. I'm on the factory ecu with a 996 program. The fuel controller on kicks in at a selected throttle point but like you said even at that there will be no adjustments until you really get on it and it goes into open loop.
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Ah, so at some point the fuel management goes into open loop. That explains it. So these "$69 Miracle Chips that give you 60+ HP" ads are onto something, because all they are is a resistor that splices into the MAF and supposedly leans out the AFR at high loads?