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Not that I don't trust Halim, but I'd already emailed Kratos...
Me
"When you have under hood cone intakes on a S55 motor and stop the gas pedal a "F-F-F-F-F-F" sucking sound seems to come from the turbos back through the intakes. To my ear it seems to correlate to boost building. What makes this sound?"
Kratos
"You are correct, that is the sound of the turbos building boost. The sound is normally muffled with stock turbos when running stock intakes and filters. However, the sound gets exponentially louder when larger turbos are installed."
(So like Halim said, if you don't like it put your stockers back on.)
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'18 F80 Base 6MT | '19 F82 Exec DCT | '18 F82 Comp Exec DCT | '23 G80cx
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