Ok the story goes like this... today my friend and I set out to make his s3 dose. using the information I had found and understood it was easily doable. pod filter block off bov plumbing and vac line etc. it worked perfectly and my mate drove home happy as larry. it wasnt long later that he called me saying his car was behaving strangely. he explained how it felt "non responsive" when he put his foot down. I told him to bring it back sure enough after driving the car myself it felt as though the accelerator pedal did nothing, no fuel was getting to the engine and it was exrteemly slow (spluttering hardly accelerating at all) and then suddenly at 3000rpm it would take off rapidly. needless to say we returned everything back to factory settings bov in place and all wires checked everything looked fine. a rev of the motor indicated that there was no change. we reset the ecu still no improvement. im totally stumped.. I feel bad for my mate. so if someone anyone can shed some light on the subject it would be great. thanks. brock