I have a 335i that has an ETS intercooler, AR catless downpipes and a JB4 on map 5 but with standard bmw diverter valves and it has an intermittant fault, where on full throttle it looses all power then kicks in again or kangaroos for a couple of seconds
Any ideas on what could be causing this?
Also, which would be best once ive sorted this out, or could one of the below solve my problem?
Forge DVs or
AA blow off valve.