Upping the performance, or rather measuring the increased performance, of our Project TT Coupe has been trying at times. Considering changes in dyno facilities and various mechanical gremlins, seeing just how a part effects the car hasn’t always been clear cut. As luck would have it, such difficulties are not-to-be-found during our latest installation – a performance downpipe from 42 Draft Designs. The Maryland-based company’s latest offering looked very interesting to us - a 3” downpipe for the 225 TT quattro.

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