How has the Turner Motorsports (Jim Conforti) chip affected fuel economy and performance?
I have not seen any improvement or decrease in fuel mileage (I get 19 MPG around town, and 25-27 MPG on the highway), but the engine chip has made a world of difference in tip-in response, acceleration, and drivability. The idle is smoother and the there is more power available throughout the rev range, especially at partial throttle. In stock form, the V8 doesn’t really start pulling until 3000 RPM and then it quickly loses steam at higher RPMs once beyond the “sweet spot.” The chip dramatically increases low-RPM grunt and continues pulling up top. Redline is raised to 7000 RPM, and there is no top speed limiter. Turner Motorsport quotes gains of 19 horsepower and 33 lb-ft of torque at 3000 RPM. The only real compromise as far as fuel economy is the requirement for premium gasoline.
