986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Pedro Sport Exhaust mod on a Top Speed Muffler??

FisterD · 01-07-2009, 07:46 PM

Mark,
Generally with aftermarket mufflers, you get more flow and less backpressure. This can sometimes hurt midrange torque, but usually a muffler change alone will not effect power too much either way. People that claim 15hp gains from just changing the mufflers are "selling" a product they want you to buy.
I don't think my modification would be a good choice for Top Speed mufflers. The mufflers need to have some back pressure for the bypass pipes to work efficiently, and I believe the Top Speeds would not have enough. If you still have your stock muffler, I cold definitely work with that.
Darin

01-07-2009, 07:46 PM	#6
FisterD Registered User Join Date: Jan 2009 Location: Nor cal Posts: 1	Mark, Generally with aftermarket mufflers, you get more flow and less backpressure. This can sometimes hurt midrange torque, but usually a muffler change alone will not effect power too much either way. People that claim 15hp gains from just changing the mufflers are "selling" a product they want you to buy. I don't think my modification would be a good choice for Top Speed mufflers. The mufflers need to have some back pressure for the bypass pipes to work efficiently, and I believe the Top Speeds would not have enough. If you still have your stock muffler, I cold definitely work with that. Darin Last edited by FisterD; 01-07-2009 at 07:49 PM.