blackhawkxx Posted December 5, 2003 Share Posted December 5, 2003 How much more horsepower would there be when going from a set of slip-ons to a 4into1 full system on a jetted carbed Bird? Quote Link to comment Share on other sites More sharing options...
BIG BOY Posted December 5, 2003 Share Posted December 5, 2003 I would say 5 - 10 more HP depending on jetting and exhaust. Quote Link to comment Share on other sites More sharing options...
Northman Posted December 6, 2003 Share Posted December 6, 2003 5 max Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.