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I was 10.5-10.3 and the tuner leaned my car out to 11.3-11.1 at 19PSI... he gained 30hp by doing that and I'm sure dropped the injector duty cycle. You may gain some significant power by leveling off the fuel and bringing down the timing to prevent KR. You'll get better power with a leaner mixture than you will with the advanced timing... but i'm sure you know that
The less timing I used the longer it took to spool/max boost. The answer would have been to swap to a different converter, but I already had the injectors and my fuel options are not that limited. It pulled like a freight train
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