Exhaust size...

Chi_Town_MK3 · 03-25-2010, 04:51 PM

Im looking to get a turbo back exhaust system and was wondering whats the Pros and Cons of going with a 3.5" or 4" exhaust system over a 3" exhaust system. Because I like the sound of the 4" over 3".

Chi_Town_MK3 · 03-25-2010, 10:13 PM

Quote:

Originally Posted by Green7mgte

what type of engine do you have. put your specs in your sig so we can see it every time.

see my sig for example
type of car / engine.
any mods

rebuilt 7mgte with forged internals, p&P head, Brian Crower Stage 2 cams. soon to be either 61-t turbo or 71mm turbo. other than that stock

Green7mgte · 03-26-2010, 01:37 AM

now make that your sig. =)

Chi_Town_MK3 · 03-26-2010, 02:14 AM

Quote:

Originally Posted by Green7mgte

now make that your sig. =)

k now made

suprajim · 03-26-2010, 04:10 AM

Blasphemy!!!! Just kidding. You spelled "Supra" wrong in your sig.

midwestmk2 · 03-26-2010, 03:53 PM

I would just stick with the 3" piping.. Any bigger and you will have problems sourcing mufflers without having to reduce it into it.. Im running 3" on my MKII N/A and it is loud as hell.. Plus i dont see any benifit in exhaust flow after a 3" unless your running a huge race only car or a cummins,lol..

TurboSupera · 03-26-2010, 06:51 PM

Agreed. I think 3" is fine....anything bigger is overkill unless you're running some serious HP numbers.

Quote:

Originally Posted by midwestmk2

I would just stick with the 3" piping.. Any bigger and you will have problems sourcing mufflers without having to reduce it into it.. Im running 3" on my MKII N/A and it is loud as hell.. Plus i dont see any benifit in exhaust flow after a 3" unless your running a huge race only car or a cummins,lol..

Chi_Town_MK3 · 03-26-2010, 09:50 PM

Quote:

Originally Posted by midwestmk2

I would just stick with the 3" piping.. Any bigger and you will have problems sourcing mufflers without having to reduce it into it.. Im running 3" on my MKII N/A and it is loud as hell.. Plus i dont see any benifit in exhaust flow after a 3" unless your running a huge race only car or a cummins,lol..

this was the exhaust I was thinking of going with...

http://www.extremeturbosystems.com/T...duct_info.html

Chi_Town_MK3 · 03-26-2010, 09:51 PM

Quote:

Originally Posted by TurboSupera

Agreed. I think 3" is fine....anything bigger is overkill unless you're running some serious HP numbers.

well with the new turbo Ima be getting I was gonna be running around 20psi

Green7mgte · 03-27-2010, 06:42 AM

christ. you should be trying to run 500 hp or better with 20psi..
f it. if you got the cash go bigger. if you can find 4" the whole way out.

"note" I did not look at his current specs. I am not saying running 20psi is warranted for his current build. just stating my opinion.

03-25-2010, 04:51 PM	#1
Chi_Town_MK3 Intake Join Date: Feb 2010 Location: Chicago Posts: 31	Exhaust size... Im looking to get a turbo back exhaust system and was wondering whats the Pros and Cons of going with a 3.5" or 4" exhaust system over a 3" exhaust system. Because I like the sound of the 4" over 3".

03-26-2010, 01:37 AM	#3
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	now make that your sig. =) __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

03-26-2010, 04:10 AM	#5
suprajim Intake Join Date: Jul 2009 Location: Dallas, TX Posts: 36	Blasphemy!!!! Just kidding. You spelled "Supra" wrong in your sig. __________________ 1992 Supra 7MGTE A/T w/Sunroof Super Red/Shadow Gray

03-26-2010, 03:53 PM	#6
midwestmk2 3" Exhaust Join Date: May 2005 Location: STL ,MO. Posts: 206	I would just stick with the 3" piping.. Any bigger and you will have problems sourcing mufflers without having to reduce it into it.. Im running 3" on my MKII N/A and it is loud as hell.. Plus i dont see any benifit in exhaust flow after a 3" unless your running a huge race only car or a cummins,lol.. __________________ 83 p-type,5spd,4;10 gears,New 86 cressida 5MGE 195hp,HKS metal head gasket,Cressida injectors,d-port intake runners,No EGR,No cat,Tweaked MAF,Custom cold air intake,Custom rear strut bar,Perfection clutch,Custom 3inch exhaust,4inch bazooka muffler,,Only 2700lbs,, COME AND GET IT!IF YOU DARE!! Please no Honduuuuhhhs!!! http://www.cardomain.com/ride/858848/2

03-27-2010, 06:42 AM	#10
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	christ. you should be trying to run 500 hp or better with 20psi.. f it. if you got the cash go bigger. if you can find 4" the whole way out. "note" I did not look at his current specs. I am not saying running 20psi is warranted for his current build. just stating my opinion. __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

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