I just got done tuning a b5 a4 1.8t with a big turbo on it. The whole time we were tuning and logging, I was wishing the owner had WAI equipped. If you can get the ecu to stop pulling timing you will pickup a LOT of power, from the looks of it, you are pulling 10+ degrees of timing.
I know a lot of audi tuners try to run them lean, but given the amount of timing that is being pulled, running high 10's low 11's on pump gas only would be a better bet, then lean it out under WAI.
Do you have any means of tuning the ecu or are you still on the stock one?
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