Cat back vs. Axle Back!?!?
Hey guys, currently I am running just my roush axle backs rest of exhaust is stock, I had a really great deal offered to me for a Magnaflow catback exhaust system. Is it really worth it to get the catback over say just swapping out the mid pipe and using the stock pipes with the roush axle backs or does the 3 inch tubing really make that much of a difference? Any dyno videos on this to show gains from a catback?