Hey guys. Does anyone by chance know the OD of the turbo inlet on a stock Evo 4 turbo? I'm pretty sure it's 2.5" but I'm not 100% sure. I'm currently not at my car right now other wise I would look myself. Thanks for any help.

 

The tech info manual lists the evo5 turbo inlet as 56mm which I think is the same as the evo4, I doubt it would be smaller.

 

I believe 2.5 is correct. I have an evo 4 engine in my car with the stock turbo. It's small. the exhaust is a 9T if that tells you anything. I will measure the inlet size when I get home today if you want.