tazman7474: These are slightly fettled road cars. I run 98ron fuel, I could use octane booster etc, but then thats not the car itself. I've added cold air intake, and also water spray for the intercooler too recently. Hence even though where the car is sick and lost 20bhp peek :o( its still up 5LBFt in torque. The boost isnt consistent, and tails off after 5000rpm ( this is where tha power is being lost obviously) . So got to get that sorted out, then will look at raising the boost.