Definately worth investing in if you have the old style plastic clutch hose (red), only on the S1. They are renowned for going in hot weather. The plastic expands, the clutch system loses pressure, then you can't select any gear. I'm speaking from · 28/05/08

A little louder and more exhaust popping on deceleration, works well with the aftermarket exhaust · 28/05/08

Great sound however it seems to create a smoother acceleration curve, even though it probably has increased the power by a couple of horses, it seems to of lost some torque · 28/05/08

Feels good, creates a nice exhaust note, but cannot compare it to a standard exhaust as it came on the car · 28/05/08