I just got the Milltek Cooper exhaust manifold/cat on today, now I have it and the Milltek Cooper cat-back exhaust. The combination sounds wonderful. I feel a slight increase in throttle response and deeper growl with the manifold. Next is the MTH tuner file I have been waiting to upload (waiting for the manifold to come). It's tuned for my ITG flat panel air filter, Milltek manifold, and Milltek cat-back. Does anyone have this combination of hardware & software that can comment ?
THANKS