If you're stock/S1 with a 2.25 BAR MAP sensor you could also turn the MAP clamp up so the PCM sees about 16-17 pounds of boost and see what that does. It should get richer but will also try to run less aggressive timing advance. See what the race gas does and you might need to play around a little. Also is your manifold/turbo by any chance glowing abnormally more red than stock after your runs? I'd check with the couple other people running the 2.0L cams but straight-up could very well be an issue. Get back to us after your testing.
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