Exhaust for 7mg(t)e

XtreeX · 03-07-2006, 01:39 AM

Hey guys...
I will be doing a swap (7mgte) in the next year or two but need a new exhaust, stat! Will getting a 3" exhaust right now be bad for the n/a side of it? I guess i just don't want to buy a 2.5" muffler and cat and piping, then have to get a whole new exhaust shortly down the road... it'd be money wasted in my opinion. So my question I guess is, what exhaust setup would do me suffice now and with the 7mgte?

Thanks... sorry if thats a little confusing?!

XtreeX · 03-07-2006, 01:49 AM

Will running a highflow cat, 3" to muffler be bad? Even if it's only for a year or two?

supra_91 · 03-07-2006, 03:01 AM

i don't see why it would hurt it. if you don't get tested for emissions i would run with a test pipe instead of a high flow cat. there is a thread in here somewhere on exhaust systems, i'll have to find it and post it

supra_91 · 03-07-2006, 03:03 AM

here it is....hope this helps

http://www.toyota-supra.info/forums/...read.php?t=957

XtreeX · 03-07-2006, 03:55 AM

Yea i read that awhile ago. Liek i know what i would put on it if i were going to stay n/a, but i think that im going to put the 7mgte in for sure now and that kinda changes my plans... with headers as well. Because I cant put the OBX headers for the 7mge on the 7mgte... correct?

mrnickleye · 03-07-2006, 04:43 AM

Correct on the header issue. You could use 3" everything back. You just will loose some torque on the launch, but can gain some high end. But I would not be reving past 6500rpm anyway.

For me, mostly around town, I like the torque on the bottom. Quicker 0-60.

If you do put a header on now, you could always sell it here after you do the turbo swap.

Cat conv does give you some (?) back pressure for the n/a.

If it were me....I would go 3" with a 3 chamber magnaflow muffler to get some back pressure. It would be plenty of sound, and I've read of others with turbos use it just fine.

XtreeX · 03-07-2006, 09:39 AM

ohk. so get the headers now, sell them later. I can do that. I'll just keep them as clean as possible over the span.

Then get a high flow cat, 3" custom exhaust to a 3" magnaflow muffler? Sounds like a plan. This summer its paint job/body work... and manual conversion... then next summer i plan on doing the swap. I'll have to suffer threw low end loss for the time being. it'll be worth it in the end financially.

Thanks fellas. I think that's it?

hangsupra · 03-07-2006, 06:08 PM

get a 3" cat back with a 6"muffler for a high flow.... thats what i use on my mk2 turbo.

03-07-2006, 01:39 AM	#1
XtreeX 3" Exhaust Join Date: Feb 2006 Location: Rockford, IL Posts: 92	Exhaust for 7mg(t)e Hey guys... I will be doing a swap (7mgte) in the next year or two but need a new exhaust, stat! Will getting a 3" exhaust right now be bad for the n/a side of it? I guess i just don't want to buy a 2.5" muffler and cat and piping, then have to get a whole new exhaust shortly down the road... it'd be money wasted in my opinion. So my question I guess is, what exhaust setup would do me suffice now and with the 7mgte? Thanks... sorry if thats a little confusing?!

03-07-2006, 03:01 AM	#3
supra_91 Lexus & 550's Join Date: Sep 2005 Location: Illinois Posts: 521	i don't see why it would hurt it. if you don't get tested for emissions i would run with a test pipe instead of a high flow cat. there is a thread in here somewhere on exhaust systems, i'll have to find it and post it __________________ 91 N/A automatic supra;K&N FIPK;2.5" custom exhaust;no cat;pacesetter header;eibach springs;tokico "blues";MKIV TT rims

03-07-2006, 03:03 AM	#4
supra_91 Lexus & 550's Join Date: Sep 2005 Location: Illinois Posts: 521	here it is....hope this helps http://www.toyota-supra.info/forums/...read.php?t=957 __________________ 91 N/A automatic supra;K&N FIPK;2.5" custom exhaust;no cat;pacesetter header;eibach springs;tokico "blues";MKIV TT rims

03-07-2006, 04:43 AM	#6
mrnickleye 1000whp postwhore Join Date: Jun 2005 Location: Mojave Desert, Calif. Posts: 1,705	Correct on the header issue. You could use 3" everything back. You just will loose some torque on the launch, but can gain some high end. But I would not be reving past 6500rpm anyway. For me, mostly around town, I like the torque on the bottom. Quicker 0-60. If you do put a header on now, you could always sell it here after you do the turbo swap. Cat conv does give you some (?) back pressure for the n/a. If it were me....I would go 3" with a 3 chamber magnaflow muffler to get some back pressure. It would be plenty of sound, and I've read of others with turbos use it just fine. __________________ Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing. TEMS, and some nice MODS. Sold to a friend 10/08/08.

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03-07-2006, 01:49 AM	#2
XtreeX 3" Exhaust Join Date: Feb 2006 Location: Rockford, IL Posts: 92	Will running a highflow cat, 3" to muffler be bad? Even if it's only for a year or two?

03-07-2006, 03:55 AM	#5
XtreeX 3" Exhaust Join Date: Feb 2006 Location: Rockford, IL Posts: 92	Yea i read that awhile ago. Liek i know what i would put on it if i were going to stay n/a, but i think that im going to put the 7mgte in for sure now and that kinda changes my plans... with headers as well. Because I cant put the OBX headers for the 7mge on the 7mgte... correct?

03-07-2006, 09:39 AM	#7
XtreeX 3" Exhaust Join Date: Feb 2006 Location: Rockford, IL Posts: 92	ohk. so get the headers now, sell them later. I can do that. I'll just keep them as clean as possible over the span. Then get a high flow cat, 3" custom exhaust to a 3" magnaflow muffler? Sounds like a plan. This summer its paint job/body work... and manual conversion... then next summer i plan on doing the swap. I'll have to suffer threw low end loss for the time being. it'll be worth it in the end financially. Thanks fellas. I think that's it?

03-07-2006, 06:08 PM	#8
hangsupra 12psi boost Join Date: Jan 2005 Location: 209 area in cali. Posts: 397	get a 3" cat back with a 6"muffler for a high flow.... thats what i use on my mk2 turbo.