only tried this a few times on Private roads/ disused air fields with permission (thought i'd clear that up haha)...
I'm losing boost at speeds above around 110mph in 5th gear and 130mph in 6th. The car will still pull but not very well and the turbo can be heard constantly coming on and then cutting off all the way up to 170ish (which isn't GPS verified but was showing on the speedo.
Understandable boost does die out higher up in the rev range but i would have thought this would be at more like 6500rpm really??
Just wanted to know if anyone elses map does this? the car has been checked over and plugged into diagnostics and no faults showing up..
Any comments really appreciated, i'm having the map removed tomorrow as what it's doing to the car just doesn't feel right (it's the forth car i've had mapped now)