Review on 🚀 Increase Fuel Efficiency and Performance with the Innovative Performance Chip for Toyota FJ Cruiser 4.0L - Save on Gas, Boost MPG, Horsepower and Torque! by David Stover

Well, after reading the reviews, saying it's hard is like saying a marathon runner has a hard time running. Super easy to assemble and install. Yes, you should find your specific vehicle's IAT sensor wires. Polarity does not matter during installation. Now for the results. 2007 Toyota FJ with cold air intake. I haven't run a dyno, but there is a very noticeable increase in power throughout the rpm range. As for the increase in gas mileage - I've had around 16.7-17mpg at best. Now (if you don't mind) I have a stable 18.5. Tested with 4 full fills. I'd say it pays for itself in fuel savings within a few months. Very good and super easy product and installation!