What is the size of the coupler coming off the turbo to the intake pipe? This is using the stock Greddy intake pipe.

That was the only one that I didn't get a correct sized replacement for when I did the install. It's much longer than any of the other couplers.

 

a little under 2.5", I have a 2.5" on mine.

 

The outer diameter of the turbo's compressor outlet, which I believe is what you're asking about, is ~2".

The outer diameter of the throttle body inlet, which I believe is what Koto thought you were asking about, is ~2.5".

edit Or did you mean the compressor inlet? That one's an oddball size in SAE terms, but 2.5" will work.

 

See, I think I have a 2.5 inch around here, but I don't think it is as long as the one that is on there.

 

I'm asking about the coupler that connects to the pipe that leads to the airbox so I think your first option.