• full exhaust system gains??

Posted: **Tue Jan 31, 2012 11:56 pm**

hi, just out of curiousity, what bhp gains would you tend to see from a 400 with a full "race" system exhaust on it?

Posted: **Wed Feb 01, 2012 2:12 am**

someone started the same thread today. maybe you can get some answers there? viewtopic.php?f=24&t=32850

full exhaust system gains??