OK... after reading all the positive posts on this tuner I'm in for one. Now all I have to do is see if there is enough cash in my piggy bank to get one ASAP. Will pull the Jet out as you guys say. Thanks again for the advice.
no the diablo will not substitute for the gsm esp fan mod, unless you drive around with your predator plugged in all the time while updating settings.
the fan mod is for the track so you can sit there with your car "off" and cool down. unless you want to re set your fans all the time with the diablo. also I dont think the diablo esp is 100% off like the switch is.