Wait do you have a stage 2 chip adjusted for the larger injectors already AND the AFC compensated at ~-30% too? Dude, if that's the case, of course you are knocking like a motherfucker. The stage 2 chip is already making the compensation that you are trying to manually make with the AFC. Now it's like you are pulling out ~65% fuel.

If we had known about the new chip previously, all of these problems would have been gone a long time ago. You are essentially running 200cc injectors.

With the stage 2 chip in, set te AFC to 0 and tune from there. With stock chip, set it to -31% and tune from there.

It's running again shitheads.

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