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I have bought a gt35r and a high mount manifold, Wanting to know what size exhaust to run.

ideally probs a 3.5

but your asking for a loud exhaust that the epa wont like very much.

wats ur power aim?

3" should be enough for around 300kw =]

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A properly built exhaust wont pose a problem like that at all in 3.5"

Wish I had your muffler shop. I have 3 & 1/2 all the way with 2 custom mufflers and a resonator and its still too damn loud (98 dec.) I cant run at lakeside raceway because of it. :thumbsup:

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Ideally 3.5 inch turbo back.

Thats if youve got the space. I had to use a 3 inch dump, then go a 3.5 inch from the front pipe due to space restrictions in the engine bay between ABS and engine. Still made an easy 350rwkw (RB26) though.

Shaun.

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Wish I had your muffler shop. I have 3 & 1/2 all the way with 2 custom mufflers and a resonator and its still too damn loud (98 dec.) I cant run at lakeside raceway because of it. :)

your still having problems?

fark man thats not good at all :(

I'll let you know what mine is after its slight change etc as im expecting it to be a bit quieter again

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im using a Gt35R on my GTR engine but ive done with a very small exhaust housing

its a ATP in house machined garrett exhaust housing

its basically a .78 divided exhaust housing taken from some other turbo machined to suit the GT35r core

im also using a custom twin scroll aka split pulse manifold to suit the exhaust housing

it also has a ATP anti surge compressor housing as well

engine is just waiting to be bolted back into the car B4 its tuned

ill post up the results once its finished

dump pipe is a 3inch

didnt want to go to big because its my daily

Edited by STR8E180
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I run a GT35R ext gate and 0.63 rear .... 3.5" turbo back custom dump... metalcat, rest is a "Lavidia" (I think or something similar) exhaust that was already on the car from the cat back... proper mufflers etc... its only loud over 4K.... passes noise test...

Dump was made by my old tuner... only had to bend the aircon lines a little to make it all work ......

currently 306rwkw at 16psi.... full tune in a week or so, but I'm not expecting any flow issues... at 24-25psi

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