Right i took the car to get mapped a few weeks ago to get my boost sorted, as it was only making 1.3bar. Once mapping started we got the boost up to 2.0bar but soon as the car gets over 5k revs boost is dropping off to 1bar it feels like hitting a brick walk as its instant loss not just gradual. Now I've had the cr spec gt30 off and had it checked and that's fine i then found a air leak from inlet as i didn't fit o rings oops, I've since had inlet off and o rings fitted but been back out today and exactly the same problem?

Its seriously doing my head in now as I've already wasted a lot of money with fuel and mapping etc so anybody have any ideas as to why im losing so much boost?

Cheers