catback vs. catback w/headers
Thread Starter
Le Mans Master
Joined: Jan 2009
Posts: 5,656
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From: ocean springs mississippi
catback vs. catback w/headers
i love the sound of my car (bassani cat back system), but would like it to sound a little bit more aggressive w/o losing that sweet exhaust note.....i bought some 1 7/8 kooks headers,lg hi-flow cats,fast 102lsxr intake (ported).....mow much is this going to change the exhaust note?
Race Director
Joined: Mar 2007
Posts: 11,331
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From: Missouri City Texas
Your car currently has an H-pipe on it which DOES provide a bit deeper tone than an X-pipe, but overall the general tone of your car will be similar, as the mufflers have greatest effect on that, just much louder and you will have more drone around 1500-1700 rpms.
If you install the longtubes and the ported FAST at the same time you'll be driving an entirely new animal. You'll love it.
If you install the longtubes and the ported FAST at the same time you'll be driving an entirely new animal. You'll love it.
Thread Starter
Le Mans Master
Joined: Jan 2009
Posts: 5,656
Likes: 112
From: ocean springs mississippi
Your car currently has an H-pipe on it which DOES provide a bit deeper tone than an X-pipe, but overall the general tone of your car will be similar, as the mufflers have greatest effect on that, just much louder and you will have more drone around 1500-1700 rpms.
If you install the longtubes and the ported FAST at the same time you'll be driving an entirely new animal. You'll love it.
If you install the longtubes and the ported FAST at the same time you'll be driving an entirely new animal. You'll love it.
ch differance did your fast make?
Thread Starter
Le Mans Master
Joined: Jan 2009
Posts: 5,656
Likes: 112
From: ocean springs mississippi
Race Director
Joined: Mar 2007
Posts: 11,331
Likes: 18
From: Missouri City Texas
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Race Director
Joined: Mar 2007
Posts: 11,331
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From: Missouri City Texas
Ah I see, I didn't know you had the bassani x-pipe installed. I was assuming just the rear-section and kept the stock h-pipe.
In that case, the "tone" of the exhaust won't change that much, but it will be greatly amplified and will only be slightly higher pitch due to the construction of the longtubes versus the very heavy stock manifolds.
Thread Starter
Le Mans Master
Joined: Jan 2009
Posts: 5,656
Likes: 112
From: ocean springs mississippi
Ah I see, I didn't know you had the bassani x-pipe installed. I was assuming just the rear-section and kept the stock h-pipe.
In that case, the "tone" of the exhaust won't change that much, but it will be greatly amplified and will only be slightly higher pitch due to the construction of the longtubes versus the very heavy stock manifolds.
In that case, the "tone" of the exhaust won't change that much, but it will be greatly amplified and will only be slightly higher pitch due to the construction of the longtubes versus the very heavy stock manifolds.
Race Director
Joined: Mar 2007
Posts: 11,331
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From: Missouri City Texas
They make one, but the gains are far less in comparison to the LS2, which has the worst LS intake manifold since the 98-99 LS1 Fbodies.
The fact that the LS2 intake manifold is SO BAD is why the gains are so awesome.
The fact that the LS2 intake manifold is SO BAD is why the gains are so awesome.
Team Owner
Joined: Nov 2006
Posts: 21,136
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From: Long Island New York
Most of what I hear is the FAST isnt much better than the ported stock unit. Lots of unsubstansiated claims as always with these things. I'm curious to see actual confirmed data showing close to 30 hp with a ported FAST. I havent seen any, have you? If its true(and maybe it is) I would consider one for my car.
Race Director
Joined: Mar 2007
Posts: 11,331
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From: Missouri City Texas
Here is a good thread showing the LS2 intake compared with various other intakes, including the FAST 90 (unported) showing 22hp and 22tq increase.
http://www.ls1gto.com/forums/showthread.php?t=289456
I should have my own dyno results tomorrow going from stock to ported FAST 90. I made 367 before. My mods since then have been the FAST 90 and a 3200 converter (which generally robs a little power on the dyno).
http://www.ls1gto.com/forums/showthread.php?t=289456
I should have my own dyno results tomorrow going from stock to ported FAST 90. I made 367 before. My mods since then have been the FAST 90 and a 3200 converter (which generally robs a little power on the dyno).
Last edited by FloydSummerOf68; Jan 6, 2011 at 03:07 PM.