Originally Posted by
SiST
I know they are Mark, hence ditching the IB5 for one. I would rather look a noob and realise there is an improvement I can make than build the box and think I should have done it afterwards. It will be getting some launches at pod so any improvement is good as the ST doesn't suit the back of a green flag lorry
The biggest improvement you could make would not be to the box itself but to how your power is deliverd.
Have the engine mapped on a dyno and with an air injector for boost control, that way your boost is mapped against throttle angle and more accurately it would be if trying to map a 400bhp Fiesta on the road.