Chris@Hypertech
Member
I would love to know myself. I've even considered sending Chris a PM to learn this. I can't think of any other source who would have tested near every intake available for the ms3. Surely there are differences. Come on Chris - which one would did you leave on your car after testing them all?
Ok, ok, I'll answer! We put the stock air box back on it so we could sell the car.
As far as HP gains, there's not much difference between them. We never actually did a back to back to back test. We were tuning them as we went, and there were too many variances between dyno runs to acurately compare numbers, but they were all within 5 to 10 HP, once they were calibrated correctly.
There were definitley some differences in fit, appearance, and price. In my opinion, those factors would weigh in more than the performance difference that you'll see.