Exhaust question
09-14-2016, 03:54 PM
#31
Race Car
To be fair you can find copies of the 996 cup bumper in fiberglass for < 1k from Getty and other vendors. Not the path I'd go but a cheaper alternative none the less. Fiberglass just seems like a really fragile and unforgiving material for a bumper in my opinion.
09-15-2016, 06:37 AM
#32
RL Community Team
Rennlist Member
Rennlist Member
Agree. I had a spin and collected a brake marker in excess of 100 mph which caused a small crack in the end of the bumper in the wheel arch area. I'd imagine fiberglass would have disintegrated.
09-16-2016, 09:43 PM
#35
Rennlist Member
Paypaled 5 or 6 HRDs (Hot Rod Dollars - 1HRD=500$) to a chap in MiamI for 997.1 Cup Quiet Version exhaust and headers.
WeTune bolted right up for another couple of HRDs.
Carbon rear bumper install.
After test run, noticed slight bubbling of paint near tailpipe outlets.
Installed thermal foil shield to cut radiation.
All good.
Sound at LCMT... got blackflagged once or twice... now avoiding WOT near undercover mic man hiding in bushes.
This is where I practice all my point bys. ;-)
I think I'm generally borderline if going full out. Tried it in later sessions with no consequence. Maybe mic man snoozing.
01-01-2017, 07:48 PM
#40
Rennlist Member
I had 2011 RS exhaust on my 2004 GT3 which, along with CF cup bumper, saved over 70 lbs off the back of my GT3. The 997 headers and cats are compact, single-piece units with equal length tubing which is much improved. You'll want new header gaskets and header bolts when making this swap, obviously. The O2 sensors need to be customized to reach your engine harness because the 996 exhaust crosses over and clips into the opposite side for rear sensors while the 997 system doesn't. If using the 996 Cup rear bumper then you'll need to get creative with the aluminum rear bumper beam and remove the rivets from the bumperettes to clear [which is what I did] or remove the bumper beam completely which I think is a bad idea. You'll also want the Cup car heat shielding for this bumper.
For mufflers, the above posts are correct. I had Ti center muffler only with FVD single tube bypass pipes which comes with secondary inlet blockoff plates. If you go with the 997 RS muffler then you also need the muffler straps and a correct 997 muffler bracket because the 996 bracket won't work. Goes without saying that the cat pipe to side muffler clamps and center muffler side flanges are also needed.
I was going to test an idea which allows keeping the stock 996 GT3 rear bumper and side exits but leverages the 997 GT3 headers + cats. If you're interested then email me through Rennlist.
For mufflers, the above posts are correct. I had Ti center muffler only with FVD single tube bypass pipes which comes with secondary inlet blockoff plates. If you go with the 997 RS muffler then you also need the muffler straps and a correct 997 muffler bracket because the 996 bracket won't work. Goes without saying that the cat pipe to side muffler clamps and center muffler side flanges are also needed.
I was going to test an idea which allows keeping the stock 996 GT3 rear bumper and side exits but leverages the 997 GT3 headers + cats. If you're interested then email me through Rennlist.
02-09-2019, 06:15 AM
#41
Bumping an old thread, I’ve been running the 997gt3 header, cat and center muffler. Now ran in to the very common rear crack on muffler. Muffler is toast. To many cracks to weld.😔
Anyone have experience with Dundon Orange center muffler. Unfortunately I need the quiet version to pass sound on most tracks here in Europe. Damn, I miss Sebring sometimes.
Anyone have experience with Dundon Orange center muffler. Unfortunately I need the quiet version to pass sound on most tracks here in Europe. Damn, I miss Sebring sometimes.
Last edited by 997rs4.0; 02-09-2019 at 09:56 AM.
02-11-2019, 02:20 PM
#42
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Bumping an old thread, I’ve been running the 997gt3 header, cat and center muffler. Now ran in to the very common rear crack on muffler. Muffler is toast. To many cracks to weld.😔
Anyone have experience with Dundon Orange center muffler. Unfortunately I need the quiet version to pass sound on most tracks here in Europe. Damn, I miss Sebring sometimes.
Anyone have experience with Dundon Orange center muffler. Unfortunately I need the quiet version to pass sound on most tracks here in Europe. Damn, I miss Sebring sometimes.
- John Gaydos
__________________
SOUL PERFORMANCE PRODUCTS
Quality Exhaust Solutions, Fair Pricing, and Outstanding Service
John Gaydos- Owner, Performance Specialist
Cell - (484) 883-6197
johng@soulpp.com
Jon Wheel - Marketing Manager
jwheel@soulpp.com
SOUL PERFORMANCE PRODUCTS
Quality Exhaust Solutions, Fair Pricing, and Outstanding Service
John Gaydos- Owner, Performance Specialist
Cell - (484) 883-6197
johng@soulpp.com
Jon Wheel - Marketing Manager
jwheel@soulpp.com
02-11-2019, 02:43 PM
#43
Race Car
Good luck breaking a Dundon orange center muffler. I dare you to try your hardest, Jamie makes good stuff. Sebring was my home track for a couple years, it is a great track and not a care in the world for sound restriction as it's in the middle of nowhere haha.
- John Gaydos
- John Gaydos
02-11-2019, 03:00 PM
#44
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I appreciate that. There are relatively few people and companies on Rennlist that actually support the Porsche community with their experience and the products they provide...I consider them A players. Jamie/Dundon is on that relatively short list and they know that. I have no hesitation in recommending the best person or company to meet a member's goals in the event that myself or SOUL does not fit the bill. I would expect the same from those that aren't here to be cookie cutter sales employees, and actually value the members of our community.
02-11-2019, 03:59 PM
#45
Good luck breaking a Dundon orange center muffler. I dare you to try your hardest, Jamie makes good stuff. Sebring was my home track for a couple years, it is a great track and not a care in the world for sound restriction as it's in the middle of nowhere haha.
- John Gaydos
- John Gaydos
You don’t happen to know what dB numbers it provides. Dundon orange are kind of pricey (almost 4grand)., So nice to know before starting the process of putting an order in?
