Melvin Lee
Member
Re: BMW Performance Intake & Exhaust for E90 320i?
I heard smaller engine size BMW, 2500cc n below with automatic transmission, requires backflow on the exhaust in order to have more gain. Anyone knows if this is true?
ed6141;645372 said:Low end loss is minimal.
But the same cannot be said, if you will to for quad exhaust.
I heard smaller engine size BMW, 2500cc n below with automatic transmission, requires backflow on the exhaust in order to have more gain. Anyone knows if this is true?