Quick little fun video,
An RS3 we've already tuned on the OEM cats. I do a quick power run. Then remove the RS3 from the rolling road.
I then remove the cats, and replace them with decat downpipes, purchased from E-Bay.
We then put the car back on the rolling road, on the same day same dyno, and run it up again for some power runs to see if it's made a difference.
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