what is needed, on revo site it just says:
An aftermarket performance exhaust system
A 4 bar fuel pressure regulator (

anyone have one of these?)
An optional aftermarket diverter valve
And a Revo SPS (whats this? the switch?)
so basically, what is a MUST for a stage 2... do you HAVE to have an aftermarket zorst.... i know its a good idea and will limit performance without... but surely you can still have the stage2 tuning?
basically asking, because i probably will get the revo remap offer Vtec has sorted out. but when it comes to zorst time... having to go back to have a fwe tweeks for stage 2 is a bit of a pain...