Live map is the ONLY way that a stage 3 car will run on greys
greys should keep things cooler, is this true?
NO, greys can supply more fuel but a chip will be mapped to supply a cirtain amount of fuel dependant on RPM and load site so therefore you'll probably find that grays or greens will both be mapped to supply the same amount of fuel! An uprated fuel pump wouldn't be a bad idea!!
PJay