CSL engine - advice sought!

[Matt62]

Hi! Some may know me from other forums, I race an E46 M3 V8 GTR. But I have an E46 M3 road-car. I considered the CSL but opted for an M3 spec'd up instead.

I've done the suspension, brakes etc and now have the bits I need to turn my engine into a CSL engine, I have a genuine CSL airbox, CSL ECU and wiring loom. This will be installed in a few weeks and the ECU re-mapped.

The question for you chaps is should I be looking for CSL cams as well or will a re-mapped and tweaked CSL ECU with standard M3 cams be sufficient to have similar power output ?

I suspect many of you have upgraded your CSL camshafts ? My experience, only in the race cars, is that with very high lift camshafts the bottom-end is severly sacrificed. How have people found upgraded camshafts? Should I just go for this instead perhaps ?

Any thoughts or advice would be much appreciated!