| After the turbo bigger is better.
You can run 3" on a low powered/boost car, it won't hurt it but you won't gain much either over a 2.5" as there comes a point where it's out of gas.
Running 2.5" on a high hp car will adversely effect performance.
I know this because I have seen dyno sheets, been told by people cleverer than myself have read it in books/online and experienced it myself on my own cars. |