[neutron256]

There is always some risk when modding a car. This can range from voiding your warranty to causing serious damage to the car. You should understand what you're doing before making any mods.

That said I'm not sure why the specific worry about the check enging light. It's an idiot light and usually just means some sensor saw an abnormal condition. If your modding your car one of the first tools you should have is and OBD2 scanner of some sort.

Did you acutaly have the check engine light come on, or are you just worried because you've been reading about issues others have had?