This is a bone stock (apparently down to the plugs) 266,000 mile 2007 impala 3.5. Never did this in three years of my gf owning it.Reduced Engine Power is a GM thing with something is decently wrong and may possibly damage the Engine. I've had to adjust a table in the tune on some cars that have mods because that will kick in. If I remember right there's one that compares airflow of the MAF to TPS position, if the air flow is more than it "should be" at a certain TPS it kicks that on thinking something is wrong. Headers and a bigger exhaust on a car with the tune properly dialed in has triggered it before so I basically raise the values of the differences so it doesn't trigger that code.
It's English my friendSo the electrodes on the plugs have seemingly left the building and the mill still ran??? I've heard of recessed 'trodes but buried?? The script showing on the one plug almost looks chinese or ay-rab. They made in Pakistan or one of the other stans maybe?
Nick
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