Originally Posted by StreetShark

Its a scam it does give you a slight increase in power, but screws with your cars computer. They'll tell you that it change the fuel to oxygen ratio, but what it really does tell your computer your not getting a certain amount of air. Just don't buy it if your on a budget and need a good improve in air performance check out www.spiralmax.com or net don't rember. also in Super Street it is advertised.