EdSanders

2004 996 Gt3 stock muffler noisy rattling and needs replacement. Non track use and value preservation.
Options:
1. Can it be replaced with "generic 996" muffler or is the stock Gt3 muffler required ? (Dismantled muffler $200 vs new stock from Germany $ 2100)
2. Replace mufflers with aftermarket i.e. Fabspeed
Thanks for any input.
ed

cgfen

in my experience 996 mufflers do not have the exact same positioning for inlet / outlet
i'd buy speedtech exhaust again before ever buying fabspeed

pirahna

I have been eyeing these.
https://www.carnewal.com/products/99...-Sport-Exhaust

De Jeeper

I ran c2 fabspeed mufflers in my car for a while. While they fit i had to fight them some to make them work. I would think the larger factory c2 mufflers woiud be more difficult.

I think either used or aftermarket gt3 parts r fine for the exhaust. U just want to make sure they sound decent with no drone. I went with a used big bore 997 fvd system. It fits well but the muffler brackets r not 100 correct.

black04

Questions

• How many miles?
• How do you know that it is the muffler that is rattling? i.e. Did you eliminate the converters as the source of the rattling noise?
• Which 993 wheels do you have on your 928?

Answer:

• Regarding 996 muffler...most likely not.
  • Besides, a 996-muffler-jury-rig will not give you "...value preservation."
  • The two models have different motors, thus the mufflers are different.

mrrolleyes

the gt3 is specific, headers cats and mufflers.

nice set of gt3 mufflers in the classifieds for sale
https://rennlist.com/forums/market/1406072