Well before I fit my Milltek cat back I had standered exhaust and tested what the cat could do on my liquid gauge bhp, g's, temp, boost and then after fitting my Milltek resonated cat back I did it again and my boost went from 12 psi to 15 psi is this normal or something wrong weird to me and gained about 10 bhp as well if not more as I did not open it up as much pleased with it sounds great too
I want more sound so should I take resonated out
Tar
I want more sound so should I take resonated out
Tar