Restrictive Mufflers?
Guys, I need your advice/opinions. I switched my mufflers out for a new set, and the first time back to the track, I ran .6 seconds SLOWER! The 60' time was with-in .03. The old set of mufflers were DynoMax race bullets, essentially a swell in the pipes.(3" x 16") And I switched to a set of FlowMaster Super 40's. (also 3" dia. pipes) Any advice/ideas would be welcome. Thanks-Dave