3inch straight pipe...
I just installed 3inch straight pipe and I'm pretty happy with it... it's really loud but it's the way I like it... what the heck is a pre silencer? do you mean a catalitic converter? and you don't say what you want to put it on... we need to know what engine you have.. turbo's really quite the exhaust down so straight is really not a good idea on a non-turbo...
Dan