Car went on the rollers the other day at Noble.
Got good power (234bhp, 258 lb/ft) but they said it was running lean in the middle of the rev range and them came good at the end to give power figure.
I know it's not the map, as I had the same lean problem prior to the map, so what can it possibly be?
Plugs are good, fuel fine (optimax), so I can only presume it either AFM or maybe a lambda sensor.
Any ideas how I can test/prove if it's lambda, afm or something else?
Any ideas folks ?