My mate has got a FRST running OFAB ecu the car hits a brick wall at 5000rpm and it then drops on to 3 cylinders, its running a T3 turbo conversion running 7psi with a 195 superchip and beige injectors

When the car drops to idle it idles at 2000rpm for a good 30 seconds then drops to a 1000rpm

Anyone got any ideas


Brian