Originally Posted by Alpina_B3_Lux
I don't have any personal experience with these two, but am aware of a number of users in this forum that have given positive feedback in relation to both. You can search around a bit, there are lots of threads on COBB in particular on the US side of this forum.
Allready ordered quad back exhaust,ETS 5.0" FMIC.
At last,found local tuner and i think i will get the jb4 + ar design catless ceramic coated DPs+meth injection. Now thinking about the yearly car inspection...with the ar catless dp´s...does it pass the emission test?
If i look correct, your manual handles +430hp 670nm with no problems?and no clutch/gearbox or other parts need to change?