hay guys the engine light has come on on my bf xr6t its staying on, in the manual it says its not in factory emmisions or something along those lines, the car has a gutted cat the 1st night getting it back from my tune it came on so they did something to my flash box and it went away, now its back on today 2 weeks later, going to take it in monday to get it check but im just a bit worried, car drives fine nothing differant is happning so I cant see it being major?? any advice would be good