Exhaust for R34 GTR

[Deza3000]

Hi All,

Yes.. I know this topic has been beaten to death, however im in a bit of a predicament (1st world problems) and would like your assistance

I just got my car tuned on e85 running 2859-9 turbos, the car made 355rwkw on 20psi  however i was informed that my current exhaust was holding back the turbo (and response). I am currently running a turbo back (3inch?) titanium fujitsubo exhaust which is a twin pipe design and flows out into one larger muffler with an Apexi Cat, it is super quiet which i love, unfortunately max output is 350kw.. I was advised to go for a 3.5 - 4inch exhaust but the problem is i cant find any for a R34 GTR! I can only find ones that fit R33 (i.e. HKS hiper) that are reasonably high flowing. 

Does anyone know any other exhaust manufacturers that will help solve my issue? I cant seem to find resellers either  

Or if anyone wants my quiet titanium exhaust for their louder free flowing exhaust, happy to trade with cash adjustments!  

[djvoodoo]

HKS Super turbo muffler. 85 mm from the cat all the way through. No step downs, quiet and good for 600HP. Not quite 3.5 inch, but close enough...

I bought mine from Nengun Japan

[Griffin]

Where are you located? I'm running a home made 3.5 inch you can look at.

[NZ-GTT]

+1 for the HKS super turbo muffler. It is straight through design with no restrictions or reduced diametetrs inside the mufflers. I just bought one second hand on BidJDM for $500 plus shipping. Quiet too for a straight through design. Have a look on youtube.

[choyda]

Check out AM Performance - they did my Titanium 3.5".  They're Adelaide based but Andrew can make one regardless - just make sure you're running an R34 sized cat, not an R33 one (shorter).

[Deza3000]

Sounds perfect. Just saw some reviews on youtube. WIll have a look online and buy one

Thanks for the help!

[Deza3000]

2 minutes ago, choyda said:

Check out AM Performance - they did my Titanium 3.5".  They're Adelaide based but Andrew can make one regardless - just make sure you're running an R34 sized cat, not an R33 one (shorter).

Will suss them out too! Another titanium would be nice

[burn4005]

I've got a super turbo on an r34. Chopped off the flange where it bolts to the Cat coverter as it's 75mm there. Welded on a 3.5" instead to match the dump pipe

Very quiet. Happy with it.

[33GTRV]

Get the entire exhaust. Remove it from your car and flog it on ebay. You can build a very very good 4" system that is very free flowing with a nice quiet note and no drone. Honestly, the off the shelf stuff is literally shart. 

[mxfly]

Have a kakimoto gt10z 3.8" straight through with no restrictions if you're interested. Located in syd

[No Crust Racing]

I have almost the exact same combo, but I have cams.

I had my fabricator make me a custom setup so my exhaust is as follows.

• HPI 3" Dumps.
• HPI 3.5" front pipe. 
• Full 3.5" Vband exhaust, "special high flow cat".
• Magna flow mid muffler. 
• Apexi Evolution Rear muffler. 

Car is quite and makes good power. 

I will say you wont make much more power by changing exhaust until you put cams in it. 

 

[Deza3000]

Ill have a look into it. It seems custom is the way to go. Will speak to an exhaust shop, i wouldnt mind modifying the HKS exhaust, however if i can get the same quality if not better for cheaper then will take a different route.