Exhaust Update...
Thread Starter
Drifting
Joined: Sep 2009
Posts: 1,330
Likes: 61
From: Nantucket MA
Exhaust Update...
I was finally able to get the exhaust updated on the car. It spent some more time this winter at DMC Racing in Halifax MA for the update. Last winter it got a full 8.50 cromoly cage and chute there. I'd bet a good amount of money that its the nicest fitting 8.50 cage in a C5 in the country. I expect the very best from Dennis and the guys, and each time I'm blown away by the quality of the work.
The car was one of the first 4L80e swaps into a C5 so a few things were a bit dated. The main one being the exhaust. From the turbos back it was a 2.5 inch setup. The x-pipe had about 7 (not joking) bungs welded in it over the years all at incorrect angles. When it came time to go around the fab aluminum tranny pan things got tight and who ever built the exhaust chose to scallop the pipe down to almost half thickness in order to clear the pan corners. I'm honestly amazed the car runs what it runs with such a huge restriction. From there the pipes went up and over eventually ending in a 1-off set of mufflers made just for this car by Borla. These mufflers flow a ton, and are insanely quiet. Too quiet for most peoples liking. Like, as quiet if not more quiet than a stock C6. Over time the hangers on the can's got trashed and they were barely hanging on there so that had to be fixed as well.
So...here's what it went in looking like.
BEFORE
BEFORE
Now, time for the good stuff. We went with a full 3 inch stainless setup using all V-bands for ease of removal. The whole thing was built sectional so just pieces I needed to could be removed without disturbing the rest. The car is a Hot Rod Drag Week car so roadside repairs happen. Dennis was able to retain the mufflers and utilize the factory mounting points at the tail of the car. One bolt on the V-band and the cans come right off. Eventually extensions will be made for when the muffles are removed. The whole update was not cheep, but its top notch work, and I don't mind paying for quality.
So, here you go....
AFTER
AFTER
AFTER
AFTER
Not sure if the car will gain some power or not, but that wasn't really the point anyway. Only time will tell I guess!
- Travis
The car was one of the first 4L80e swaps into a C5 so a few things were a bit dated. The main one being the exhaust. From the turbos back it was a 2.5 inch setup. The x-pipe had about 7 (not joking) bungs welded in it over the years all at incorrect angles. When it came time to go around the fab aluminum tranny pan things got tight and who ever built the exhaust chose to scallop the pipe down to almost half thickness in order to clear the pan corners. I'm honestly amazed the car runs what it runs with such a huge restriction. From there the pipes went up and over eventually ending in a 1-off set of mufflers made just for this car by Borla. These mufflers flow a ton, and are insanely quiet. Too quiet for most peoples liking. Like, as quiet if not more quiet than a stock C6. Over time the hangers on the can's got trashed and they were barely hanging on there so that had to be fixed as well.
So...here's what it went in looking like.
BEFORE
BEFORE
Now, time for the good stuff. We went with a full 3 inch stainless setup using all V-bands for ease of removal. The whole thing was built sectional so just pieces I needed to could be removed without disturbing the rest. The car is a Hot Rod Drag Week car so roadside repairs happen. Dennis was able to retain the mufflers and utilize the factory mounting points at the tail of the car. One bolt on the V-band and the cans come right off. Eventually extensions will be made for when the muffles are removed. The whole update was not cheep, but its top notch work, and I don't mind paying for quality.
So, here you go....
AFTER
AFTER
AFTER
AFTER
Not sure if the car will gain some power or not, but that wasn't really the point anyway. Only time will tell I guess!
- Travis
Last edited by trayack; May 27, 2015 at 06:46 PM.
Race Director
Joined: Dec 1999
Posts: 10,230
Likes: 885
From: Alexandria, Virginia, USA VA
I was finally able to get the exhaust updated on the car. It spent some more time this winter at DMC Racing in Halifax MA for the update. Last winter it got a full 8.50 cromoly cage and chute there. I'd bet a good amount of money that its the nicest fitting 8.50 cage in a C5 in the country. I expect the very best from Dennis and the guys, and each time I'm blown away by the quality of the work.
The car was one of the first 4L80e swaps into a C5 so a few things were a bit dated. The main one being the exhaust. From the turbos back it was a 2.5 inch setup. The x-pipe had about 7 (not joking) bungs welded in it over the years all at incorrect angles. When it came time to go around the fab aluminum tranny pan things got tight and who ever built the exhaust chose to scallop the pipe down to almost half thickness in order to clear the pan corners. I'm honestly amazed the car runs what it runs with such a huge restriction. From there the pipes went up and over eventually ending in a 1-off set of mufflers made just for this car by Borla. These mufflers flow a ton, and are insanely quiet. Too quiet for most peoples liking. Like, as quiet if not more quiet than a stock C6. Over time the hangers on the can's got trashed and they were barely hanging on there so that had to be fixed as well.
So...here's when it went in looking like.
BEFORE
BEFORE
Now, time for the good stuff. We went with a full 3 inch stainless setup using all V-bands for ease of removal. The whole thing was built sectional so just pieces I needed to could be removed without disturbing the rest. The car is a Hot Rod Drag Week car so roadside repairs happen. Dennis was able to retain the mufflers and utilize the factory mounting points at the tail of the car. One bolt on the V-band and the cans come right off. Eventually extensions will be made for when the muffles are removed. The whole update was not cheep, but its top notch work, and I don't mind paying for quality.
So, here you go....
AFTER
AFTER
AFTER
AFTER
Not sure if the car will gain some power or not, but that wasn't really the point anyway. Only time will tell I guess!
- Travis
The car was one of the first 4L80e swaps into a C5 so a few things were a bit dated. The main one being the exhaust. From the turbos back it was a 2.5 inch setup. The x-pipe had about 7 (not joking) bungs welded in it over the years all at incorrect angles. When it came time to go around the fab aluminum tranny pan things got tight and who ever built the exhaust chose to scallop the pipe down to almost half thickness in order to clear the pan corners. I'm honestly amazed the car runs what it runs with such a huge restriction. From there the pipes went up and over eventually ending in a 1-off set of mufflers made just for this car by Borla. These mufflers flow a ton, and are insanely quiet. Too quiet for most peoples liking. Like, as quiet if not more quiet than a stock C6. Over time the hangers on the can's got trashed and they were barely hanging on there so that had to be fixed as well.
So...here's when it went in looking like.
BEFORE
BEFORE
Now, time for the good stuff. We went with a full 3 inch stainless setup using all V-bands for ease of removal. The whole thing was built sectional so just pieces I needed to could be removed without disturbing the rest. The car is a Hot Rod Drag Week car so roadside repairs happen. Dennis was able to retain the mufflers and utilize the factory mounting points at the tail of the car. One bolt on the V-band and the cans come right off. Eventually extensions will be made for when the muffles are removed. The whole update was not cheep, but its top notch work, and I don't mind paying for quality.
So, here you go....
AFTER
AFTER
AFTER
AFTER
Not sure if the car will gain some power or not, but that wasn't really the point anyway. Only time will tell I guess!
- Travis
nice stuff~!~!
Thread Starter
Drifting
Joined: Sep 2009
Posts: 1,330
Likes: 61
From: Nantucket MA
The new street tune that's in the car is good until 16 psi, and with the old exhaust setup the diff between the 12 and 16 psi was an extra 100hp at the tire. Not sure what it will do on the 16psi...haven't tried it yet.
- Travis
Thread Starter
Drifting
Joined: Sep 2009
Posts: 1,330
Likes: 61
From: Nantucket MA
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Melting Slicks
Joined: Jul 2008
Posts: 3,001
Likes: 212
From: Houston Texas
2018 Corvette of Year Finalist
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Looks great. It's amazing how well 3" exhaust fits on these cars when it is planned and routed properly.
Anymore details on these one-off titanium mufflers made by Borla? What's the back story and any idea on the internal design?
Anymore details on these one-off titanium mufflers made by Borla? What's the back story and any idea on the internal design?
Thread Starter
Drifting
Joined: Sep 2009
Posts: 1,330
Likes: 61
From: Nantucket MA
Not sure of the internal design of the mufflers, but they were made specifically for this car with the goals in mind. It's insanely quiet. You'd never know it was anything special. The only give away are the tucked 345s with the LPE mini-tub.
- Travis