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Old 10-06-2012, 11:12 PM
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CALWATERBOY CALWATERBOY is online now
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Location: San Francisco
 
Join Date: Aug 2009
Posts: 9,696
Mein Auto: 2009 E93 N54
Quote:
Originally Posted by justinnum1 View Post
Golf tee mod does nothing but increase sound from the exhaust, and some people say it makes a difference, others say it doesnt. I dont think it does anything for the n20
Reducing exhaust area 50% has an effect vs flap open. Perceived add'l torque off idle may be no more than faster turbo spin-up due to reduced back pressure.

Anyone got a readout on that?
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