Im installing new shorty headers about 1.5 inches straight pipe (no cat) with a 3 inch y pipe and 3 inches all the way out to a magnaflow muffler. what im getting at is are the headers going to add power? Also when im done how loud will it be?
im debating the straight pipe.

wow i didnt realize my dumbass put this in the engine detailing forum haha

 

Actually this is not only about engine detailing, generally about the whole car.

Try the exhaust section.

 

Moved to Exhaust for ya