alright heres the problem.... my 04 cobra just started to have power surges in a way when i would just coast to a light or stop sign the rpms would just fall once it got to 1k rpmand then it would surge from like 300-600 and sometimes it would even stall. can anyone help me out here?

 

probly some badd sensors

check your maf
or maybe tuned wrong with diablosport tuner

if not any of those try feed it high octane fuel bout 104 rating

 

could the tune just stop working?? cause it was tuned before i bought it and it has been fine for the past few months until yesterday

 

mayeb try checking your throttle position sensor. not sure that it would cause a stall but it could cause the rpm to fluctuate like that.

 

Maybe your alternator is crapping out? How's your charging system?

 

If you have an air filter that requires oil spray, ex. k&n, sometimes the oil will coat the inside of the maf. You can use the spray electronics cleaner to carefully clean it. Otherwise, the throttle position sensor might be the only other thing