So the Ti-Catback is a 80mm which is ~.15 bigger than 3" if I have a 3" Test pipe will that cause fitment issues. I don't see how I will have any performance loses if I'm running 3" going into a slightly more open piping. Well any answers would be appreciated. I'm so confused as some exhaust applications vary from 75 (~2.97" -80mm ~3.14") Thanks again.

 

All you need to do is make sure that when you mount it on its as close as you can get it to center. And you'll be fine it really is not that big of a difference

 

Thanks ebb

 

No prob thats what we are here for

 

The Ti will have a taper at the flange that meets the cat or test pipe so the size discrepancy will have you with a smaller opening on the catback.