986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Reccomended Cat-back Exhaust for my 99 2.5L?

RandallNeighbour · 10-24-2007, 09:32 AM

Chris, whatever muffler you choose, know that the swap will be for a sound enhancement, not a HP gain that one can feel.

Changing your headers will give you 15 HP though.

Whatever you buy, insure it has a money back guarantee you can use if the muffler has resonance between 2-3k. It can get very loud and give you a headache if you get a two-chamber muffler with a lot of resonance like the one I am running (DelubozParts).

I love the sound of my exhaust and much larger headers with the top down, but with the top up and windows down, the drone at 2-3k rpm, such as one would maintain while bumping along in traffic, is simply unbearable.

You'll pay a LOT more for a muffler that is advertised as having no resonance, but it's worth the money.

10-24-2007, 09:32 AM	#3
RandallNeighbour Registered User Join Date: Jul 2004 Location: Houston, Texas Posts: 7,243	Chris, whatever muffler you choose, know that the swap will be for a sound enhancement, not a HP gain that one can feel. Changing your headers will give you 15 HP though. Whatever you buy, insure it has a money back guarantee you can use if the muffler has resonance between 2-3k. It can get very loud and give you a headache if you get a two-chamber muffler with a lot of resonance like the one I am running (DelubozParts). I love the sound of my exhaust and much larger headers with the top down, but with the top up and windows down, the drone at 2-3k rpm, such as one would maintain while bumping along in traffic, is simply unbearable. You'll pay a LOT more for a muffler that is advertised as having no resonance, but it's worth the money.