My true dual 3" setup with X-pipe (vid inside)
Thread Starter
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
My true dual 3" setup with X-pipe (vid inside)
Redid my exhaust to true dual 3" all the way back. Magnaflow X pipe, some summit flex pipes, and dynomax 12" long bullets.
Gained abit of clearance back from the single 4" exhaust and the big 6" round case muffler i had under the car. I'm happy with the setup so far.




Quick video, quick revs
http://www.youtube.com/watch?v=q2Ow-FIJVj0
Gained abit of clearance back from the single 4" exhaust and the big 6" round case muffler i had under the car. I'm happy with the setup so far.
Quick video, quick revs
http://www.youtube.com/watch?v=q2Ow-FIJVj0
Junior Member
iTrader: (1)
Joined: Dec 2006
Posts: 50
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From: hagerstown,md
Car: 90 chevy camaro convertible iroc
Engine: 305 tpi
Transmission: 700r4 with hurst dual gate shifter
Axle/Gears: 3.73
Re: My true dual 3" setup with X-pipe (vid inside)
why is there more smoke out of the one tailpipe
Joined: May 2009
Posts: 410
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From: Petal Ms.
Car: 1990 Iroc
Engine: 6.0
Transmission: 4l65E
Axle/Gears: 373 zexel torsen
Re: My true dual 3" setup with X-pipe (vid inside)
Sounds and looks good to me. I have a question tho, does it make any difference if one exhaust pipe is longer than the other one? I noticed yours is and made me wonder about it.
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From: Northern CT
Car: 1986 Trans am
Engine: 5.3 LM7
Transmission: T56 6 speed
Axle/Gears: Dana 44 w/ 3.55's
Re: My true dual 3" setup with X-pipe (vid inside)
sounds awesome! your car is a beast man, cant wait till my turbo setup is up and running!
Senior Member

Joined: Mar 2007
Posts: 574
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From: Muscatine IA
Car: 91 Firebird Formula
Engine: 383
Transmission: built 700r4
Axle/Gears: 4.11, 9inch
Re: My true dual 3" setup with X-pipe (vid inside)
i watched sum of the other vids and i forgot to ask wats it look like under the hood?
any pics?
any pics?
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From: Mid West
Car: '87 Camaro
Engine: '92 Carb'd 350
Transmission: 700r4
Axle/Gears: factory stock
Re: My true dual 3" setup with X-pipe (vid inside)
Orr89RocZ--
Thanks for posting the pictures-now I have an idea of where things are going to be TIGHT!
Looks/
/sounds great!!
Thanks for posting the pictures-now I have an idea of where things are going to be TIGHT!
Looks/
/sounds great!! Trending Topics
Thread Starter
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: My true dual 3" setup with X-pipe (vid inside)
No idea why one pipe is more "smokey" than the other. Its cold here and thats just the way the hot exhaust reacts with the atmosphere. At first start it was even but now its clearly not so. Not sure why.
As far as length, it may matter alittle, as exhaust length has tuned effect on the cylinder scavenging. I should have had the drivers side exit on the passenger side since its the longest but oh well.
Theres plenty of room to tuck 3" under these cars in the stock cat location and down the driveshaft tunnel. Its over the axle it gets tricky. I used Vbands to connect the tail pipes to the over the axle midsection, so i can easily take down this exhaust if need be.
As far as length, it may matter alittle, as exhaust length has tuned effect on the cylinder scavenging. I should have had the drivers side exit on the passenger side since its the longest but oh well.
Theres plenty of room to tuck 3" under these cars in the stock cat location and down the driveshaft tunnel. Its over the axle it gets tricky. I used Vbands to connect the tail pipes to the over the axle midsection, so i can easily take down this exhaust if need be.
Senior Member

Joined: Mar 2007
Posts: 574
Likes: 2
From: Muscatine IA
Car: 91 Firebird Formula
Engine: 383
Transmission: built 700r4
Axle/Gears: 4.11, 9inch
Re: My true dual 3" setup with X-pipe (vid inside)
i wouldnt be to worried bout tuned exhaust lenght if you have an xpipe
kinda there to balance it out anyway
kinda there to balance it out anyway
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From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: My true dual 3" setup with X-pipe (vid inside)
Very nice. The smoke is just condensation. Looks like you did pick up some ground clearnance.
Thread Starter
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: My true dual 3" setup with X-pipe (vid inside)
I've could have done much better on the clearance part but i have yet to put the car on the ground to check it. From pics of my old setup i think i gained the precious few inches I wanted to gain to make this thing more streetable, as if a 9 sec car can be streetable haha.
I want to get another clip of the exhaust really warmed up, the car likes to die out when rev'd. It will rev up and once you let off, it dies. Not sure why. Fueling issues i'm sure or stall saver stuff not working. Oh well.
The turbos do help quiet things down tho but those bullets do a good job too. With straight pipes it is still pretty loud but the bullets do help give it tone and alittle less volume. I'm happy with it, from the short bits i've heard so far i think it sounds great.
I want to get another clip of the exhaust really warmed up, the car likes to die out when rev'd. It will rev up and once you let off, it dies. Not sure why. Fueling issues i'm sure or stall saver stuff not working. Oh well.
The turbos do help quiet things down tho but those bullets do a good job too. With straight pipes it is still pretty loud but the bullets do help give it tone and alittle less volume. I'm happy with it, from the short bits i've heard so far i think it sounds great.
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From: Aloha, Oregon
Car: '91 Camaro Z28, '85 Camaro Z28
Engine: LB9, LB9
Transmission: T5, 700r4
Axle/Gears: Eaton 3.73 Posi, 3.23 Posi
Re: My true dual 3" setup with X-pipe (vid inside)
Sounding really nice
Thread Starter
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: My true dual 3" setup with X-pipe (vid inside)
Awesome! Thanks for the pics. I am going to make a duplicate of your system but I am going to run dual 2.5" pipes. I should be able to fit it a little tighter. I'm going to 2.5" because that is what my turbo exits are..I know someone would ask why only 2.5".
Thread Starter
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: My true dual 3" setup with X-pipe (vid inside)
you'll have alot of room to get 2.5" in there.
Thread Starter
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: My true dual 3" setup with X-pipe (vid inside)
just in the vid right now. Still undecided on the tips, i kinda like them but they need adjusted alittle.
Senior Member
Joined: Nov 2005
Posts: 670
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From: Michigan
Car: 1984 Camaro Berlinetta
Engine: 355
Transmission: Th-350
Axle/Gears: 3.23
Re: My true dual 3" setup with X-pipe (vid inside)
Awesome! I want to turbo my car so I can have a FMIC like yours, that thing is sexy.
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Joined: Oct 2007
Posts: 1,078
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From: Ventura County, California
Car: 2002 GS300 Sport Design
Engine: 3.0L 2JZGE
Transmission: 5-Speed Shiftable Automatic
Re: My true dual 3" setup with X-pipe (vid inside)
Sounds sweet man.
Im gonna go with a dual set up as well but with cats and the same bullet mufflers but dumped though.
Tony.
Im gonna go with a dual set up as well but with cats and the same bullet mufflers but dumped though.
Tony.
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