Review on Advanced Performance Chip/Power Programmer for Scion FR-S 2.0L - Boost Fuel Efficiency, Save Gas & Increase MPG, Enhance Horsepower & Torque! by Austin Hampton

No lie, it's worth it. If you follow the instructions that come with the package, you won't regret it. preferably before going to bed. - Disconnect the negative pole from your battery. Splice in two wires for your intake air. Wait overnight, reconnect the negative pole. I immediately felt the difference. and it's not a placebo. 3 different people drove with me and before saying anything they all asked if I had done anything else to my car.