Quote:
I found this site ...
Can be a good info there.
http://www.pontiacstreetperformance.com/psp/exhaust.html
Very conclusive evidence IF that info is true. However, it looks like the info came from the exhaust manufacturers.
The Youtube links with the X-pipes defintely dont sound any quieter, in fact they're much "nastier", so thats contradictory evidence sitting behind the computer here
Also, if I read that report correctly, the ideal set up would be a 3" entry, 2.5" exit, X pipe.
"2.5" tail pipes are the maximum diameter for minimal power loss"
Last edited by NOrrTH; 02/02/12 08:33 PM.