4inch exhaust

[whenmunkysfly]

I was wondering would it even be worth it to go that big. I went down to the local exhaust shop, guy was an ass, but if it would help I want to go 4inch but if not then I wont worry about it. guy at the shop said it wont fit but a 3 1/2 will fit so I don't see why you can't get the extra 1/2 in. The BIC 3 1/2 sounds really nice and if the extra 1/2 isn't worth it then I'll just go with his. Anyway will it fit and is it worth it?

I do plan to run 500+rwhp

 

[Disced]

Well... the difference between 3 1/2 and 4 inch is only comparible at like 700 + HP... Otherwise 3 1/2 will flow fine.. I have 3" on mine and I'm going to go bigger sometime soon~

4 inch will fit though.. As many people have done it, all custom though~

 

[oscolivar1]

u can make it fit, but your going to have clearance issues with the ground scrapping the hell out of it especially if your car is alrdy lowered.
some people have problem of the exhaust scrapping the ground @ 3" pipping.

You can use oval shapped exhaust pipping.
Born2Drv i think is going that route of oval exhaust.
here ya go of his thread:
http://www.supramania.com/forums/showthread.php?t=34842

IMO 3.5" is good for 500+
BIC exhuast system FTW

 

[supraracer49]

Its worth it for turbo cars and I have seen Mkiii's with 4" but don't know how they fit clearance wise.

 

[whenmunkysfly]

looks like I'm doing a custom exhaust then. oval might not be a bad idea I'll have to look at that thanks guys

edit: damn that oval stuff is expencive

 

[starscream5000]

The HPK goliath exhaust is 4". IIRC Nate has it.

 

[oscolivar1]

looks like I'm doing a custom exhaust then. oval might not be a bad idea I'll have to look at that thanks guys

edit: damn that oval stuff is expencive

yes oval exhaust piping is a bit expensive but worth it if u want 4" pipping with minimal scrapping if none.

so u doing a sustom 3.5" or 4"

 

[whenmunkysfly]

another quetion do you run a 4inch down pipe if you go this route that looks like it would be hard to fit if you do

 

[whenmunkysfly]

yes oval exhaust piping is a bit expensive but worth it if u want 4" pipping with minimal scrapping if none.

so u doing a sustom 3.5" or 4"

I would go with 4inch because my goal is 500 rwhp but I know when I get there I will keep going

 

[oscolivar1]

another quetion do you run a 4inch down pipe if you go this route that looks like it would be hard to fit if you do

usually i see people run a 3" or 3.5"( usually custom)inch DP then expands to 4"

off topic, but what turbo u plan on running?

 

[whenmunkysfly]

usually i see people run a 3" or 3.5"( usually custom)inch DP then expands to 4"

off topic, but what turbo u plan on running?

thanks that's what I needed to know

 

[SupraDupra500]

im doing 4" on mine within a couple weeks.. im going to post build pics and install pics.. youll see it when it pops up

 

[VanSupra]

I'm pretty sure HPFreaks sells a 4" exhaust for the MKIII Supra.

 

[SkyHawk Ecks]

Yeah, the Goliath catback system.

 

[starscream5000]

935 does too guys, search, they are out there .