Don't bother with a Twintercooler if you have an S3 cooler... waste of time and money. Sell the Twintercooler mate.
i did think this and was very sceptical about adding the twintercooler so my s3 intercooler as the s3 is good for 500bhp, so you defo dont need the twintercooler. however, after fitting it it was noticeably faster at the top end....as timing was increased from 5 to 6