Is it possible to have "quiet" true duals/X?
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Originally Posted by cyphur_traq
aren't borla xr-1's supposed to be comparitively tame? good sound tho.
Borlas are tame, but I wouldn't say quiet..
Right Click, Save As:
http://www.ls1sounds.com/true_duals/...mped_00Z28.wmv
Cats help - the long 18" Twisters also help and there is usually no drone at all with them.
4x9 Magnaflows are great too, but to get any kind of ground clearance, you'll need to 'bash' in the floor-boards underneath the rear seat cushions.
It's possible. The quietest systems I've built - that still make great power are Macs, or stock '01+ manifolds(with or without cats), with a Dr Gas X - and 18" Twisters. Almost stock quiet at idle on a bolt-on car. But still sounds salty when you want.
4x9 Magnaflows are great too, but to get any kind of ground clearance, you'll need to 'bash' in the floor-boards underneath the rear seat cushions.
It's possible. The quietest systems I've built - that still make great power are Macs, or stock '01+ manifolds(with or without cats), with a Dr Gas X - and 18" Twisters. Almost stock quiet at idle on a bolt-on car. But still sounds salty when you want.
Thread Starter
TECH Resident
Joined: Feb 2002
Posts: 843
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From: Roseville, Ca.
Thanks Guys!
Hey Lane,
I have Flowtech LT's... Is there room for dual 3"QTP's and cats before the X?
Do you have enough adjustability for different header configs? Does it fit with a spoohn tq arm?
PM me if this conflicts with sponsor rules.
Thanks!
Hey Lane,
I have Flowtech LT's... Is there room for dual 3"QTP's and cats before the X?
Do you have enough adjustability for different header configs? Does it fit with a spoohn tq arm?
PM me if this conflicts with sponsor rules.
Thanks!
Last edited by Steve Gunn; Nov 28, 2004 at 04:23 PM.
Thread Starter
TECH Resident
Joined: Feb 2002
Posts: 843
Likes: 0
From: Roseville, Ca.
Originally Posted by Z28Venom
Borlas are tame, but I wouldn't say quiet..
Right Click, Save As:
http://www.ls1sounds.com/true_duals/...mped_00Z28.wmv
Right Click, Save As:
http://www.ls1sounds.com/true_duals/...mped_00Z28.wmv
Thread Starter
TECH Resident
Joined: Feb 2002
Posts: 843
Likes: 0
From: Roseville, Ca.
Originally Posted by Z28Venom
The quietest duals that I've heard to date are from Blaster.... but who really wants quiet true duals..
My main deal is being able to be quiet under 2K. The cops around here are on a rampage.
Thanks!
Originally Posted by Steve Gunn
Thanks Guys!
Hey Lane,
I have Flowtech LT's... Is there room for dual 3"QTP's and cats before the X?
Do you have enough adjustability for different header configs? Does it fit with a spoohn tq arm?
PM me if this conflicts with sponsor rules.
Thanks!
Hey Lane,
I have Flowtech LT's... Is there room for dual 3"QTP's and cats before the X?
Do you have enough adjustability for different header configs? Does it fit with a spoohn tq arm?
PM me if this conflicts with sponsor rules.
Thanks!
Putting cutouts in front of the X will not give you any more power. We had a customer do that and dyno(heads, cam, nitrous car) - and he made about the same rwhp numbers, but lost midrange hp and 15-20 rwtq! His system is even reduced to 2.5" at the mufflers - and his duals go out the back under the axle where there's two MORE 2.5" Magnaflow mufflers... The comparison loss would be even greater IMO if his system was 3" all the way to the axle. The X crossover gives you power over open headers - especially the Dr. Gas! proven and patented X. We've seen it many times. I tested it on my bolt on car at the track. Ran 11.45 through the duals and mufflers and went 11.46 through open headers(with extensions).
Originally Posted by Lane
There's room for the 'baby' Jet Hot cats(the ones they use on their catted Y), which we've found to work and perform very well.
Putting cutouts in front of the X will not give you any more power. We had a customer do that and dyno(heads, cam, nitrous car) - and he made about the same rwhp numbers, but lost midrange hp and 15-20 rwtq! His system is even reduced to 2.5" at the mufflers - and his duals go out the back under the axle where there's two MORE 2.5" Magnaflow mufflers... The comparison loss would be even greater IMO if his system was 3" all the way to the axle. The X crossover gives you power over open headers - especially the Dr. Gas! proven and patented X. We've seen it many times. I tested it on my bolt on car at the track. Ran 11.45 through the duals and mufflers and went 11.46 through open headers(with extensions).
Putting cutouts in front of the X will not give you any more power. We had a customer do that and dyno(heads, cam, nitrous car) - and he made about the same rwhp numbers, but lost midrange hp and 15-20 rwtq! His system is even reduced to 2.5" at the mufflers - and his duals go out the back under the axle where there's two MORE 2.5" Magnaflow mufflers... The comparison loss would be even greater IMO if his system was 3" all the way to the axle. The X crossover gives you power over open headers - especially the Dr. Gas! proven and patented X. We've seen it many times. I tested it on my bolt on car at the track. Ran 11.45 through the duals and mufflers and went 11.46 through open headers(with extensions).
Originally Posted by BLASTER
Any benefit in running the cutouts after the X? I've been thinking about doing that lately.
