Quote:
Originally Posted by ocso1606
The "Whoosh" sound is the turbo blow-off valve releasing air upon accelerating and pushing clutch in. Not hurting the car at all. Im looking for proven DYNO results before buying an aftermarket CAI. Thje BMW M intake is way too much money for the small gain, i think it was 5hp ONLY
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5hp of reliable hp at all temp levels OR..."13hp" when things aren't warm.