The pipe is 2in and at the y pipe it is 2.25 in so why won't it fit my original down.
B6 A4 daily KO4
B6 A4 daily KO4
B6 A4 daily KO4
Avus Audi RS4 2007 |Stock| Black optic | intake pipe| Android RSN-E| carbon knob Handbrake Airbag| LED interior & puddle lights
B6 A4 daily KO4
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