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jdm_celica_gts
01-13-2012, 08:06 PM
Does the after market manifolds make a big difference or is it not worth the time when I'm running only 12 psi?

I'm running a 3 inch full exhaust system from the downpipe back.

Is the manifold causing restriction?

ChrisD
01-13-2012, 10:58 PM
If you on the stock turbo, the exhaust manifold is not your restriction. Ditto for a CT20b.

jdm_celica_gts
01-13-2012, 11:06 PM
So the turbo itself is the restriction?

ChrisD
01-14-2012, 07:08 PM
Well, it's one restriction. But I'd definitely change the turbo before I'd change the exhaust manifold. :)

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jdm_celica_gts
01-15-2012, 08:09 AM
Will t3/t4 or Gt35r bolt up or will I need a custom manifold

ChrisD
01-15-2012, 06:33 PM
In either case you could use an adaptor or a custom manifold. The kits sold by ats and ko give you everything you'd need.

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gen5dream
01-15-2012, 06:44 PM
I'm currently looking at Ko's kitfor the T3/T4 very nice kit.

jdm_celica_gts
01-15-2012, 08:32 PM
I'll have to look at a Gt35r kit cause a friend is selling his to get a 40r