Catback Exhaust Stealth Dual Tip
ALTA the first company world wide to offer a full 3" Catback exhaust for the new 2007 Mini Cooper S, AKA R56. With our vast experience with other turbocharged cars, we learned that bigger is better and that a 3"exhaust system for the new turbo Mini would make the most horsepower to the wheels.
In our initial testing, of our Catback exhaust, we found great solid gains of 10 Wheel HP and 10 ft-lbs of torque. While 10 WHP is very noticeable, the most noticeable thing you will find is that the turbo spools quicker providing roughly 200RPM quicker spool. This quicker spool means more low end power! Something you might not notice is sound. It is very important to us and everyone to make the exhaust make power, but noise/tone is the next thing people are concerned with.Our new 3" system is designed to be very very mellow and appease all types of customers. No loud "farty" Honda sounds here!
Here is the dyno test on our R56 with just the catback installed between runs. 7 runs before and after were done to ensure the gains were legit.










