Hi there I am new on here I currently own a 2000 Audi s3 which I have owned for the past 3 months. In this time I have noticed a power loss at between 3000 and 4500rpm in 4th,5th and 6th gears. I have changed the N75 valve and checked all the hoses to see if the are connected are losse or damaged. The car has a forge 007 dump valve and a ram induction kit. I am not a machanic so use sure as to how to address this problem. Is it some thing that could be found on dionistic computer? Thanks for your help guys.