I don't personally own one but I have researched them. I personally didn't think it was for me for two reasons: it plugs into the back of the pump and you have to tap one or some of the wires. I do not want to risk my warrantee. eek: Plus in order for it to be able to see the EGT's you need to run their gauges, which I do not personally like the way they look. As far as how they perform, the people who have them seem to be happy with them. :