No Cass, with two 3 inch HFCs on there, it will pass emissions.


Hell Mike is making high 550-570 AWHP on most of the GT-Rs that are coming into the shop, all through dual 3 inch cats and will still pass emissions.


Thats AWHP too which is harder to make.

 

I have the AAM 3" cats and don't get any codes. In fact, if you try to use non-foulers you get a lean code LOL.

 

I saw this car last week in CT at the berlin turnpike. I was asking him questions and stuff. Its very nice car.