Ok, I've searched around a bit, and theres always been a bit of confusion over the true diameter of the exhaust. If I want to replace the scuba tank, the piping to replace it would be 2 inches, correct?

Thanks,
~Trevor

 

if i were too do it
id go with 2.25 just to open it up a lil but not too much
because you would be surprised how sound restrictive that scuba tank is

plus dont just do straight pipe
look into a good resonator and magna-flow hi flow cat combo

 

So I'd need a 2" -> 2.25" adapter right?

 

The shop will stretch the pipe or something.

 

just use 3 inch