Had my XR6t tuned by elite auto this week, was expecting a little bit more but it seems that I got a dodgy tank of fuel and the valve springs apparently need replacing too. Mods are, Xforce exhaust, Rapid V3 cooler, PW surge tank, 60lb injectors, wastegate mod and 10psi actuator. Also took the car out to Willowbank last night, ran a 12.2 @117mph on street tyres, which seems about right for the power.