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Discussion Starter · #1 ·
Hi

Is this j-pipe a restriction in flow?(gti-r)
or is better to make a custom 3 inch j-pipe?
Thanks .
 

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A few of us have made about 340- 350whp (390 crank hp)with the standard J pipe but looking at it its got to be being a restriction if anything just because of the angle it comes out of the turbo at :(
If you can get a custom one do it along with a 3" downpipe for best results then get some more made up to as everybody wants the same thing but nothing seems to be happening at the moment?
I recon a 3" dump/downpipe with a smoother angle coming out of the turbo would do wonders for the engine :)
 

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Discussion Starter · #3 ·
GINGA said:
A few of us have made about 340- 350whp (390 crank hp)with the standard J pipe but looking at it its got to be being a restriction if anything just because of the angle it comes out of the turbo at :(
If you can get a custom one do it along with a 3" downpipe for best results then get some more made up to as everybody wants the same thing but nothing seems to be happening at the moment?
I recon a 3" dump/downpipe with a smoother angle coming out of the turbo would do wonders for the engine :)

Thanks!

cheers.
 
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