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Originally Posted by sperry
Also.. a Cold Air Intake will not make that car into a "235hp" car. In fact, on an otherwise stock car, a CAI will *lose* horsepower, since the intake will lean our the Air/Fuel ratio, and cause knock, so the ECU will have to retard the timing to keep the motor from blowing up, which results in less power.
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This doesn't make sense to me. Why wouldn't the computer just add fuel to keep the mixture at the targeted AFR with any increased airflow? They have air meters in the intake tract, right? Are the injectors already maxed out at 227hp or something?