first problem is every morning when I start it the check engine light will be on or will come on shortly after. it will run fine with the cel on but right before the cel shuts off it will surge, pop, and want to die if you don't hold the rpms up. it will clear out in a few seconds but it happens everytime it comes on. I don't remember the codes but will check tomorrow but what could some possible causes be? any ideas? second ? is when I spray my nitrous it surges, like the power is coming on and off for a few seconds, its not a rapid surge. I am spraying a 75 shot wet through a plate. could this be a tune issue? or the car just getting use to nitrous?