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Discussion Starter #1
Hi guys...

i'm working on a light turbo-proyect for a D15Z

My turbo is a little T03 with .42/.63 and 45 trim

The exhaust flange come with a 2" hole

My car have a 2" catback on NA mode

Did you think is possible to run with a 2" downpipe and cat back? or is mandatory to put a 2,5 " line?

thanks
 

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I would go no smaller than 2.5" but that is just me. I help weld up a 2" downpipe for a friend before though so yes, you can run a 2" downpipe if you want to.
 

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Agreed with the above 2 posts. I also would not go smaller than 2.5" diameter on a turbo car. Sure you can go 2", but 2.5" would definitely be a worth while upgrade/improvement.
 

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Discussion Starter #5
Understood...

Is a matter that always was think like yours.

But in this case i doubt cause the car of wich i take the turbo from the junk had a 2" DP and cat back... So i was thinking maybe it work too on mine. The final horsepower and pSI will be the same.

then I will made a 2.5" Dp and line.

thanks
 
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