Exhaust size

[Speed-freak]

I've got a 92 dx hatch with the D15b7 and a 50 trim turbo. Wanting to re do the exhaust as this one has seen its share of road debris. My question is this, is 2.5 inch for being a D series turbo just the right amount of flow or should I go bigger or smaller?

Thanks in advance

 

[Failsafe88]

whats your build look like largest you need to go is 3. I think if you go get it tuned your tuner could helo you decide.

 

[203CT]

^this. But I think 2.5 if fine

 

[obracer12]

depending on your build and tune would determine appropriate exhaust sizing.

2.25 - 3.0" is a pretty good range.