No tune. Would you recommend 3" or 4"When dealing with a turbo charged engine they get a little pissy about exhaust mods, because a free flowing exhaust will cause the turbo to spin faster. This can affect the life-span of the turbo, but it usually doesn't hurt anything.
Anybody with experience on turbocharged engines can tell you the importance of a good flowing exhaust for more torque, increased HP and improved response. Equally important is a tough sound with clean exhaust note (no rasp!) and no cabin drone. Full-Race's 3" exhaust does just that: it's silent at idle, stealthy at cruising rpms and has a throaty growl under boost and wide-open-throttle. 100% handmade in the USA from 3" stainless steel, this mirror-polished catback has no drone or rasp associated with small displacement engines with oversized mufflers, while increasing flow compared to the highly restrictive stock 2.5" exhaust.No tune. Would you recommend 3" or 4"