The more boost you run, the more air is forced into the engine, and the more fuel is needed to maintain an ideal af ratio. BTW this is not 14.7:1 in turbocharged cars. Well it might be in an ultra super highly tuned car, but about 10-12:1 is safer especially when upping the boost. Also leaves room to lean it out to increase power when you are tuning it. Your mileage may vary
Mike
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90 Eagle Talon Tsi AWD - 300 Hp -K&N, 16g turbo, JE pistons, 3in Turbo back exhaust, mild port&polish
03 PT Cruiser GT - 215 Hp-Airbox and Intake pipe silencers removed
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