I put an airtec on my S2 and i used to thrash it within a inch of its life every time i was behind the wheel. no problems with it. two of my mates bought one for theres and had no problems but no of us are runnin big power (170bhp aprox??) another one of my friends has a GRS twin pass and it looks a better built product. plus GRS is tried and tested on big power cars. Dont forget the pro alloy one is only a single pass and think the boost has less distence to travel so i think turbo responce should be slightly better????
( neil usin MAXIMUM HUSTLERS log in.)