Best way to add growl & power for exhuast
#31
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.
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.
#32
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.
http://www.hhrproducts.com/porsche-cayenne-958-secondary-cat-bypass-in-2-5-or-3-diameter/
http://www.hhrproducts.com/porsche-cayenne-958-secondary-cat-bypass-in-2-5-or-3-diameter/
#33
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.
http://www.hhrproducts.com/porsche-cayenne-958-secondary-cat-bypass-in-2-5-or-3-diameter/
http://www.hhrproducts.com/porsche-cayenne-958-secondary-cat-bypass-in-2-5-or-3-diameter/
#36
On the flip side, if anyone who decats would like to sell me their OEM set, please PM me!
The bypasses I had installed rattle too much for my taste and the shop that installed them butchered my oem set...
The bypasses I had installed rattle too much for my taste and the shop that installed them butchered my oem set...
#37
RL Community Team
Rennlist Member
Rennlist Member
I have 28,000 mile secondary cats from my 2009 Turbo S if those are what you're looking for.
#38
#39
RL Community Team
Rennlist Member
Rennlist Member
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.
#40
#41
RL Community Team
Rennlist Member
Rennlist Member
#42
RL Community Team
Rennlist Member
Rennlist Member
They're a match
Looks like on eBay used ones are anywhere from $500-$750 each. What were you thinking?
Looks like on eBay used ones are anywhere from $500-$750 each. What were you thinking?
#43
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.
http://www.hhrproducts.com/porsche-cayenne-958-secondary-cat-bypass-in-2-5-or-3-diameter/
http://www.hhrproducts.com/porsche-cayenne-958-secondary-cat-bypass-in-2-5-or-3-diameter/
#44
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!
#45