Exhaust Question, not the usuall catback BS
Thread Starter
Teching In
Joined: Jan 2002
Posts: 25
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From: College Park, MD
Exhaust Question, not the usuall catback BS currently have cutouts welded into my mac orp, one on each side. The sound is incredible but I need to relocate the cutouts slightly because I am putting power plates on them. I am concerned that I am losing a little bit of torque despite the increased exhaust output from the cam.
new plan is to install an X pipe right at the headers and then have the cutouts and back down to the y-pipe to the dual dual muffler I am using.
So basically when the cutouts are open I am running a very short dual exhaust setup with x-pipe, and when closed I am using a stock single intermediate type.
I am figuring that the x-pipe will make up for any TQ losses I might get while still allowing for nice top end and some tuned sound. And if it winds up being too little BP I can always close the plates a little.
<small>[ July 16, 2002, 09:57 AM: Message edited by: Cybertech ]</small>
new plan is to install an X pipe right at the headers and then have the cutouts and back down to the y-pipe to the dual dual muffler I am using.
So basically when the cutouts are open I am running a very short dual exhaust setup with x-pipe, and when closed I am using a stock single intermediate type.
I am figuring that the x-pipe will make up for any TQ losses I might get while still allowing for nice top end and some tuned sound. And if it winds up being too little BP I can always close the plates a little.
<small>[ July 16, 2002, 09:57 AM: Message edited by: Cybertech ]</small>
!Dial-up Director
Joined: Nov 2001
Posts: 3,100
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From: Louisiana
Re: Exhaust Question, not the usuall catback BS You should shoot for about 12-16inches of pipe before you put a cutout. To close to the headers and you will lose power. I don't see an x-pipe fitting that close anyway witout a major loss of groud clearence. Most install the x after the tranny crossmember and have dumps before the axle.
Justin
Justin
Re: Exhaust Question, not the usuall catback BS I am not familiar with the inner construction of dual-dual mufflers by my guess is that they combine exhaust flow from each side internally (i.e. they function as a crossover). If so, is it worth running a X crossover also?
<img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> Steve
<img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> Steve
Thread Starter
Teching In
Joined: Jan 2002
Posts: 25
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From: College Park, MD
Re: Exhaust Question, not the usuall catback BS for what I am doing the catback is basically irelevant. It doesn't do much for me when the cutouts are closed, its when they are open that I am looking for the gains from the X-pipe.
I hadn't considered the ground clearance point, I will have to check that out.
I hadn't considered the ground clearance point, I will have to check that out.
TECH Enthusiast
Joined: Nov 2001
Posts: 712
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From: Dallas,Texas
Re: Exhaust Question, not the usuall catback BS This may give you a little visual about clearance
and headers. The pic shown is right at the brace,
where the right and left SLP header pipes join,
as you can see they hang down a bit. This would
be the location where clearance is an issue.
I belive some install the dumps downstream from
the Y but upstream from catback.
here is the pic.
http://ls1info.com/rearbrace.jpg
and headers. The pic shown is right at the brace,
where the right and left SLP header pipes join,
as you can see they hang down a bit. This would
be the location where clearance is an issue.
I belive some install the dumps downstream from
the Y but upstream from catback.
here is the pic.
http://ls1info.com/rearbrace.jpg
