Got some custom TDs. Quite pleased.
#1
Got some custom TDs. Quite pleased.
After getting tired of scraping my low-hanging y-pipe on every bump and hump on Oahu, and hearing way too much rasp way too often, I bit the bullet on some custom true duals.
Went with double Borla XR-1 multicores. It's a different sound for an F-body, but I'm pleased. It's much quieter inside the car than the LTs to Corsa was, and of course has zero rasp.
http://i283.photobucket.com/albums/k...105_085818.jpg
http://i283.photobucket.com/albums/k...105_085758.jpg
Went with double Borla XR-1 multicores. It's a different sound for an F-body, but I'm pleased. It's much quieter inside the car than the LTs to Corsa was, and of course has zero rasp.
http://i283.photobucket.com/albums/k...105_085818.jpg
http://i283.photobucket.com/albums/k...105_085758.jpg
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#3
TECH Regular
iTrader: (17)
Sounds really good man. Aggressive lope, but not too choppy. A video of a rev would be nice.
How much of a performance increase did you get over the y pipe? Is there any seat of the pants feel?
I really like the sound of my Borla adjustable with.almost no cab noise, but would like the performance increase of Tds.
How much of a performance increase did you get over the y pipe? Is there any seat of the pants feel?
I really like the sound of my Borla adjustable with.almost no cab noise, but would like the performance increase of Tds.
Last edited by Fullblast; 01-13-2016 at 10:23 AM.
#7
TECH Regular
iTrader: (17)
After getting tired of scraping my low-hanging y-pipe on every bump and hump on Oahu, and hearing way too much rasp way too often, I bit the bullet on some custom true duals.
Went with double Borla XR-1 multicores. It's a different sound for an F-body, but I'm pleased. It's much quieter inside the car than the LTs to Corsa was, and of course has zero rasp.
http://i283.photobucket.com/albums/k...105_085818.jpg
http://i283.photobucket.com/albums/k...105_085758.jpg
https://www.facebook.com/cjdunnavant...3871772363524/
Went with double Borla XR-1 multicores. It's a different sound for an F-body, but I'm pleased. It's much quieter inside the car than the LTs to Corsa was, and of course has zero rasp.
http://i283.photobucket.com/albums/k...105_085818.jpg
http://i283.photobucket.com/albums/k...105_085758.jpg
https://www.facebook.com/cjdunnavant...3871772363524/
So what is it exactly that causes the rasp in the exhaust in the first place?
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#8
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#9
TECH Senior Member
iTrader: (27)
would it be fair to say it depends on the Y pipe? Good merge vs crappy merge? Catted vs OR?
I felt a huge seat of pants change from Y to duals, and i think it was the way my Y was done. Doesn't get much worse than this:
Attachment 524552
I felt a huge seat of pants change from Y to duals, and i think it was the way my Y was done. Doesn't get much worse than this:
Attachment 524552
#13
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I agree. My neighbors tend to disagree
#15
12 Second Club
iTrader: (26)
In my opinion its the merge of two 3" pipes into one 3" or 4" pipe.
My personal proof is that I put an LS1 (stroked 383) in my '03 GMC Truck. Headers and a Y into a single muff out as dual's, similar to what was on my '02 Camaro. RASP same as the Camaro. I changed the exhaust to an honest dual system. I went with 3" to 2.5" reduced off the headers, dual's to a Magnaflow dual in/out muff out as dual's under the roll pan.
The rasp was eliminated at ALL RPM levels.
I am changing that set up with 3" all the way back and an X pipe into a Spintech dual in/out muff out as dual's under the pan when I get the Whipple SC back from rebuild. Should be 500+ at the wheels for a daily driver but I'm sure the sound results will be the same.
Plan on doing similar to my '02 Camaro. Installing a 447 CU/IN with a 4.125 stroke engine, big cam, heads etc..
I will run 3" round tubing to 3" Oval tubing into a Oval X Pipe and back to round just before the axles, then over and into two Spintech round muffs and under the bumper as slashed tips. Again I will get the RASP is 100% gone.
Chad
#16
12 Second Club
iTrader: (26)
After getting tired of scraping my low-hanging y-pipe on every bump and hump on Oahu, and hearing way too much rasp way too often, I bit the bullet on some custom true duals.
Went with double Borla XR-1 multicores. It's a different sound for an F-body, but I'm pleased. It's much quieter inside the car than the LTs to Corsa was, and of course has zero rasp.
http://i283.photobucket.com/albums/k...105_085818.jpg
http://i283.photobucket.com/albums/k...105_085758.jpg
https://www.facebook.com/cjdunnavant...3871772363524/
Went with double Borla XR-1 multicores. It's a different sound for an F-body, but I'm pleased. It's much quieter inside the car than the LTs to Corsa was, and of course has zero rasp.
http://i283.photobucket.com/albums/k...105_085818.jpg
http://i283.photobucket.com/albums/k...105_085758.jpg
https://www.facebook.com/cjdunnavant...3871772363524/
Chad
#18
Thanks guys! As far as seat of the pants feel I replaced the torque arm at the same time so it's hard to say which made it feel better. I haven't been on a track or even done much racing since I had it done. No track out here.
The main thing is my ground clearance is better and sound is WAY better. Thanks for the replies everyone. Feel free to continue with your questions if you have any.
The main thing is my ground clearance is better and sound is WAY better. Thanks for the replies everyone. Feel free to continue with your questions if you have any.
#20
Sounds really good man. Aggressive lope, but not too choppy. A video of a rev would be nice.
How much of a performance increase did you get over the y pipe? Is there any seat of the pants feel?
I really like the sound of my Borla adjustable with.almost no cab noise, but would like the performance increase of Tds.
How much of a performance increase did you get over the y pipe? Is there any seat of the pants feel?
I really like the sound of my Borla adjustable with.almost no cab noise, but would like the performance increase of Tds.