So I am somehow not yet pegged my stock maf with my steggy stage6 2.76 upper making 513rwhp but at WOT I do come quite close. I bought a diablo MAFia for the car but then got to talking to a reputable tuner and he had mentioned to me that he has had a few MAFia's fail on him while tuning and leaned the car out bad. Now my question is how many people have had their MAFias fail and how common is this?