Is this true that when your mass air flow sensor goes your engin elight doesnt come on?

 

I put on a bad MAF and it threw a check engine light.

 

It may or may not come on, I've read some 5th gen posts where it did not come on, but replacing their MAFs fixed the problem.

 

Ok I got my mass air flow sensor. I am going later this week to the steelership to get it installed. What upgrades do i need to get ECM or ECU? Are these the same? I really am unsure on this.Any help would be great!Thanks

 

I think that hapens very often...


ECU - engine control unit
ECM - engine control module