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Unless a PO changed the muffler to something aftermarket with a vacuum valve, only the GTS has a valves exhaust that opens up for more sound and flow in sport mode, not the Turbos or the Turbo Ss.
That sound on cold start comes from an enriched fuel mixture used to warm the cats faster for emissions purposes, which is ironic since you no longer have the cats.
Ahh, good to know, thanks. I thought it did something to the exhaust like in the GTS
BTW, if anybody is interested I have a Hanksville secondary cat bypass pipe for sale. It makes is super aggressive sounding and my wife actually really liked it. It was only on for a few weeks and then I ordered his resonated version to replace it. He sells it for $615 and I'll take $400 shipped. I rent the GTS out on Turo and last weeks renter said it sounded louder than his E63 AMG with the resonated version.
BTW, if anybody is interested I have a Hanksville secondary cat bypass pipe for sale. It makes is super aggressive sounding and my wife actually really liked it. It was only on for a few weeks and then I ordered his resonated version to replace it. He sells it for $615 and I'll take $400 shipped. I rent the GTS out on Turo and last weeks renter said it sounded louder than his E63 AMG with the resonated version.
I should've included that I am looking for 955 CTT secondary cats. If the 957 ones fit, then yes that is what I'm looking for!
The part #s of the 957 ones in PET I think have 955 part #s so may be the same. Maybe someone here will know since I have the DFI motor and the pre-'08 ones don't.
The part #s of the 957 ones in PET I think have 955 part #s so may be the same. Maybe someone here will know since I have the DFI motor and the pre-'08 ones don't.
Gotcha. The part numbers off mine read 7L5 254 400 and 7L5 254 450.
BTW, if anybody is interested I have a Hanksville secondary cat bypass pipe for sale. It makes is super aggressive sounding and my wife actually really liked it. It was only on for a few weeks and then I ordered his resonated version to replace it. He sells it for $615 and I'll take $400 shipped. I rent the GTS out on Turo and last weeks renter said it sounded louder than his E63 AMG with the resonated version.
I’m going to redo my exhaust and add the secondary cats back in, still doing 2.75 all the way back with x pipe and one set of resonators. I’ll report back on how it is. I have high hopes though!
What made you turn to the resonated version? Are they still available?
I mostly rent the car out on Turo. The car sounded amazing but thought it might not be for all renters so I went back to something more compromising. Yes, they are still available.
05-15-2018, 05:43 PM
