your right by saying about a safe limit, which is what i'm just about on. when i had it set up i never asked for them to push it as far as they could just so i could say i have that little bit more power, i asked for it to be set up at a reliable boost level with absolutely no det or excessive temps. as it turned out the technician said 16psi was the safe limit for me, which i was happy with. and as for the power figure you may be dubious about it but thats what it has got, i never built the engine myself, i bought it as it is, and when i had it rolling roaded it made 205bhp@wheels. that is a fact. maybe on a different roller it would have made less, but on the flip side it may have made more, either way i'm not too bothered really.

stu- appreciate what you say about safe levels, what sort of price would they be then with the mapping.