Just got a 2007 St3 really mint car. It boosts to the red everytime and drives perfectly. Had it been chipped? Is it supposed to boost 1.2 bar? It seams to boost hard then the boost drops off at 4000rpm...the gauge still shows 1.2 bar but the car isn't as fast. Feels like it bleeding of the boost or holding back etc. Any ideas??? As I said it physically drives perfectly. Thanks lads.