Iv got a nova with a c20let engine
the engine was completely standard and was running ok before.
iv just fitted a frontera intercooler, and a evo3 vmax chip.
now when I plant the throttle it boosts ok but keeps misfiring between 4 and 6k rpm.
The nova has got the std gsi fuel pump,
iv got ngk r plugs and iv tried different leads of my old c20xe,
iv tried adjusting the actuator back down,
was at santapod on Sunday and noticed alot of the c20let cars were doing exactly the same up the strip.
has anybody got any ideas ?