i have stage 2 cams and 50bhp wet nitrous kit and it works fine, it has been set up properly with a custom chip on a rolling road though. i checked with competition warehouse before i bought them and they said it would be fine.
i havent had it remapped since the supercharger has been fitted and havent driven it hard yet so will find out on friday how its doing.
when the chip was set up before, they set up the ignition timing and fuelling properly and said the way they had set it up i could use it turned on ALL the time if i wanted!