dude, keep the jwt ecu and just have jwt retune it if I had to choose between jwt and emanage. don't go emanage, imo. info for 2871 setup, click:
#/f/tech-talk/124925...-sr-motor.html ...there's more to getting 400whp. You probably want it to last too. cooling, efficiently putting the hp down, reliability, etc...seriously, read around the forum.