drifter_for_life06 wrote:on a stock N/A you wont lose power with a 3 in? i thought it was the other way around. oops : /
By the time the exhaust passes through a cat and the restrictive manifold it has already slowed to the point that it doesn't matter.
Exhaust velocity is an overused term ... frankly the first 3' of exhaust is the biggest area to focus on. After that it's just expelling the exhaust without creating further restriction.