I knew i needed Revo in my life and not SC! i have emailed them so many times asking how can their stage 3 be the same if you have a cat back or a full TBE and on that principle, if you have a full cold ai intake and not just a filter!! Im about to fit an S3 intercooler. I dare say if i email them they wont reply when i ask them! I dont like Superchips! I would not recommend them!!! As stated before, REVO is the name for the VAG group i think!