Title: This 100% will add HP. Dyno-ed tested..
Product review: Dyno-ed my 4.6 Mustang and added about (13-15)HP. BUT that was in cold (40) degree weather. As the temp goes up the HP goes down (4-6) HP when (85).Also I have a V-6 and V-4. Ford F-150, Acura Integra. The smaller the engine the more porportinate HP it will produce. If you are at all noise sensitive DONT buy this. When you stomp on the gas it sounds like a supercharger. Now if you are easy on the pedal you will never know it is there. The more your car revs the more you will hear it suck in the air. If you are at all mechanical savy you can put this on yourself. It was very easy for me. Bottom line it is a cheap and easy way to make more HP!
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