You just want the secondary catalyst by-pass pipes to suit a 'standard' RS3 exhaust system, Andy.
BOTH the Milltek and Scorpion pipes are 63.5mm (ish) diameter to suit the STD RS3 post secondary catalytic converters exhaust
Having fitted both Milltek and Scorpion to various RS3s the only difference I see, other than the Scorpion being cheaper, is that the Scorpion has stainless steel flanges where the Milltek uses mild steel
Your choice Andy but I went for the Milltek items; removed the 'DO NOT USE' labels, and used stainless steel fastenings to couple the flanges... :thumbsup:
BOTH the Milltek and Scorpion pipes are 63.5mm (ish) diameter to suit the STD RS3 post secondary catalytic converters exhaust
Having fitted both Milltek and Scorpion to various RS3s the only difference I see, other than the Scorpion being cheaper, is that the Scorpion has stainless steel flanges where the Milltek uses mild steel
Your choice Andy but I went for the Milltek items; removed the 'DO NOT USE' labels, and used stainless steel fastenings to couple the flanges... :thumbsup: