Custom-built 996 GT3 exhaust 321 stainless
#16
Rennlist Member
I do believe Charles made what I have (PJ's old car Charles) and it is sweet at the track but set off car alarms in the city. At full song, I have never heard anything like it. Unfortunately I'll have to be adding a couple of cats to smog her in Denver but should not loose much if anything in reagards to power. The center outlet/cup car carbon bumber looks sweet!
Last edited by 88 Club Sport; 05-12-2013 at 07:54 PM.
#19
Rennlist Member
I was out with a buddy last week canyon blasting and I passed him at full song and his window was open. When we pulled over a few minutes later he swore that he could not hear out of his left ear! Yes loud but in a really good way.
As for the cats, I can send the entire system back to Charles and he will install cats but I have found a local guy 5 minutes from home who comes highly recomended. He will use high-quality cats made specifically for newer OBD-II vehicles with a higher precious-metal content to enable them to do their job better and to last longer than standard "race" cats. He will use V-band flanges to the ends of your existing reverse cones (the sections of the header that will be replaced by the cats), so that the cats can be removed for on-track use.
As for the cats, I can send the entire system back to Charles and he will install cats but I have found a local guy 5 minutes from home who comes highly recomended. He will use high-quality cats made specifically for newer OBD-II vehicles with a higher precious-metal content to enable them to do their job better and to last longer than standard "race" cats. He will use V-band flanges to the ends of your existing reverse cones (the sections of the header that will be replaced by the cats), so that the cats can be removed for on-track use.
#20
Rennlist Member
#21
Craig,
Charles work is wonderful and his pipes deliver. FYI if your emissions check is performed via OBDII that system will pass. Charles built a system for my 6GT3 and current 7.1RS system and both have passed WA state smog w/o any additional mods. If Denver utilizes OBDII no worries as is. As long as you are not showing a CEL. If they actually take (sniff) exhaust sample, it will not pass.
Hope this helps, why mess with perfection?
Charles work is wonderful and his pipes deliver. FYI if your emissions check is performed via OBDII that system will pass. Charles built a system for my 6GT3 and current 7.1RS system and both have passed WA state smog w/o any additional mods. If Denver utilizes OBDII no worries as is. As long as you are not showing a CEL. If they actually take (sniff) exhaust sample, it will not pass.
Hope this helps, why mess with perfection?
#22
Rennlist Member
Craig,
Charles work is wonderful and his pipes deliver. FYI if your emissions check is performed via OBDII that system will pass. Charles built a system for my 6GT3 and current 7.1RS system and both have passed WA state smog w/o any additional mods. If Denver utilizes OBDII no worries as is. As long as you are not showing a CEL. If they actually take (sniff) exhaust sample, it will not pass.
Hope this helps, why mess with perfection?
Charles work is wonderful and his pipes deliver. FYI if your emissions check is performed via OBDII that system will pass. Charles built a system for my 6GT3 and current 7.1RS system and both have passed WA state smog w/o any additional mods. If Denver utilizes OBDII no worries as is. As long as you are not showing a CEL. If they actually take (sniff) exhaust sample, it will not pass.
Hope this helps, why mess with perfection?
If it was idle only we might be good but they do a simulated drive (on rollers) with a sniffer and I have been told that without cats when they drop form high RPM to idle it will dump fuel causing it to fail.
#23
Just ran my car yesterday at the Ridge with Charles' prototype system. It does what the dyno chart says. The car is quick and it sounds very nice. It definitely turns heads; a number of people commented on how healthy it sounds. It's probably one of the louder cars out there -- but also one of the faster ones! Looking foward to a center outlet system eventually, once Charles gets the dual outlet systems done that a couple of people are waiting for.
For those who haven't seen it, there is another thread that has videos of this system on my car so you can hear the sound. It's here:
https://rennlist.com/forums/996-gt2-...-question.html
Charles has shared with me how much time it takes to build these things. It's incredible -- just the rear section for the system sent to Joe took something like 30 hours -- which doesn't include the time to build the headers. And the material alone costs literally thousands. Ask Charles about this; I don't recall the numbers, but those Burns collectors and the many bends in 321 are unbelievably pricey. I think with custom exhaust systems that produce real power and save a lot of weight, there's just no free lunch.
Rob
For those who haven't seen it, there is another thread that has videos of this system on my car so you can hear the sound. It's here:
https://rennlist.com/forums/996-gt2-...-question.html
Charles has shared with me how much time it takes to build these things. It's incredible -- just the rear section for the system sent to Joe took something like 30 hours -- which doesn't include the time to build the headers. And the material alone costs literally thousands. Ask Charles about this; I don't recall the numbers, but those Burns collectors and the many bends in 321 are unbelievably pricey. I think with custom exhaust systems that produce real power and save a lot of weight, there's just no free lunch.
Rob
#25
Three Wheelin'
Thread Starter
It's here!
Next step, get her on the car.
#27
Basic Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
Joe, was going to ask if you got the exhaust yet but don't need to hope it was worth the wait.
The burns mufflers are made by coast fabrication. The ones for these new kits are the coast ones. Really depends on price, wait time, and what is in stock on where I get them. Straight from the manufacturer is best but sometimes if I get burns collectors I will get the mufflers from them too. This time I went straight to coast because I was able to hammer down the price. A bit more.
Also joe, there are 2 different size clamps in that bag. There are 2 1/2" and 2 5/8". The larger ones are for clamping the rear section to the engine mount exhaust bracket. The smaller ones are for the exhaust tips.
The burns mufflers are made by coast fabrication. The ones for these new kits are the coast ones. Really depends on price, wait time, and what is in stock on where I get them. Straight from the manufacturer is best but sometimes if I get burns collectors I will get the mufflers from them too. This time I went straight to coast because I was able to hammer down the price. A bit more.
Also joe, there are 2 different size clamps in that bag. There are 2 1/2" and 2 5/8". The larger ones are for clamping the rear section to the engine mount exhaust bracket. The smaller ones are for the exhaust tips.
#28
Three Wheelin'
Thread Starter
Joe, was going to ask if you got the exhaust yet but don't need to hope it was worth the wait.
The burns mufflers are made by coast fabrication. The ones for these new kits are the coast ones. Really depends on price, wait time, and what is in stock on where I get them. Straight from the manufacturer is best but sometimes if I get burns collectors I will get the mufflers from them too. This time I went straight to coast because I was able to hammer down the price. A bit more.
Also joe, there are 2 different size clamps in that bag. There are 2 1/2" and 2 5/8". The larger ones are for clamping the rear section to the engine mount exhaust bracket. The smaller ones are for the exhaust tips.
The burns mufflers are made by coast fabrication. The ones for these new kits are the coast ones. Really depends on price, wait time, and what is in stock on where I get them. Straight from the manufacturer is best but sometimes if I get burns collectors I will get the mufflers from them too. This time I went straight to coast because I was able to hammer down the price. A bit more.
Also joe, there are 2 different size clamps in that bag. There are 2 1/2" and 2 5/8". The larger ones are for clamping the rear section to the engine mount exhaust bracket. The smaller ones are for the exhaust tips.
#30
Basic Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
I always buy a new set just to be sure everything seals up ok. Then if you need to swap back and forth from My exhaust to stock if needed.
Thanks, I enjoy building these a lot. I like the R&D side of development as well. Building them always takes way more time than expected. These setups take about 65hrs to cut fit trim and weld. If I had the needs to mass produce these in high numbers I could change mufflers or redesign them a little for faster production and to keep costs down which in the end makes the consumer price less as well
Thanks, I enjoy building these a lot. I like the R&D side of development as well. Building them always takes way more time than expected. These setups take about 65hrs to cut fit trim and weld. If I had the needs to mass produce these in high numbers I could change mufflers or redesign them a little for faster production and to keep costs down which in the end makes the consumer price less as well