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Mufflers can be tricky on our cars, I have tried four different mufflers, stock, two dansk, and one gembella. I think I ran dynos on two of them. Two of them gave a lot of resonance (gemballa, and one of the dansk) , and at least one cost 3+ hp on the dynojet dyno (gemballa), it felt like it was not as fast on the butt dyno as well.
Jake Raby is comming up with more hard data on exhaust systems for our cars one of these days which should be very useful. That being said, if you can get an muffler, or muffler mod that does not have that resonance, and does not compromise performance, the sound is sure makes it seem like it has more hp and is more fun. Hey, remember, this is all about having fun....
Ed
:dance:
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My Car Webpage
2000 2.7L Boxster 102K; TTP intake, headers, high-flow cats; Dansk high-flow muffler; Autothority ECU chip; TechnoTorque 2; Bilstein coilovers; Racing Dynamics strut brace; stress-bar suspension kit; Aasco lightweight flywheel, B&M short shiftkit; 18" wheels; spare tire delete; OEM GT3 seats; JL audio speakers and subwoofer; Alpine PDX-5/PDX-2 amps; Kenwood DNX8120 CD/DVD/Nav; litronics, deambered
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