986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Performance Exhaust and Header for Boxster

Simonster · 04-29-2008, 05:43 PM

hi all. new guy here.

i just installed this exhaust on my 3.2S. great sound, actually not to loud at all, which is what i prefered. it's tough to quantify, but it gives good tone at all rev ranges without being obnoxious at all.

however, i do have the dreaded resonance/drone at around 2300 - 3000 rpm, and i REALLY want to get rid of it. you never realize how much time you spend in that range until you have resonance there!

searching the internet, it seems like there are a few potential solutions:

1. adding a cross-pipe between the mufflers. b&b uses this sort of design. since i don't know how their mufflers are designed relative to mine, i don't know if that would work, and it seems pretty invasive/risky.
2. adding a venturi into the pipe right after the cat. hmmm... that could be a relatively cheap/quick thing to try, although i haven't found one yet that's 2".

any other solutions you folks can think of? the droning isn't terrible, but it's also not something i want to live with.

thanks!

04-29-2008, 05:43 PM	#236
Simonster Registered User Join Date: Apr 2008 Location: Los Angeles, CA Posts: 1	hi all. new guy here. i just installed this exhaust on my 3.2S. great sound, actually not to loud at all, which is what i prefered. it's tough to quantify, but it gives good tone at all rev ranges without being obnoxious at all. however, i do have the dreaded resonance/drone at around 2300 - 3000 rpm, and i REALLY want to get rid of it. you never realize how much time you spend in that range until you have resonance there! searching the internet, it seems like there are a few potential solutions: 1. adding a cross-pipe between the mufflers. b&b uses this sort of design. since i don't know how their mufflers are designed relative to mine, i don't know if that would work, and it seems pretty invasive/risky. 2. adding a venturi into the pipe right after the cat. hmmm... that could be a relatively cheap/quick thing to try, although i haven't found one yet that's 2". any other solutions you folks can think of? the droning isn't terrible, but it's also not something i want to live with. thanks!