Tuning the Coyote engine in our S197 Ford Mustang has proven to be a bit more difficult than we originally anticipated, but hopefully we found a solution thanks to Church Automotive Testing. Our Project S197 Ford Mustang has been on a hiatus while we’ve been trying to figure out its issues. Our newly upgraded Coyote engine was suffering from a disappointing power curve and very poor driveability. Despite going to several local tuners, the car still ran poorly suffering from a very unstable idle that would occasionally run away, zooming to 3,000 plus RPMs. Not exactly and ideal or safe situation.
In addition, the car suffered from poor throttle response. It didn’t seem to matter if the car was at 50% or 100% throttle, it all felt equally crappy. This made it impossible to modulate the throttle, not the greatest thing when trying to navigate corners and rev matching. Even the traction control was not working right, modulating very violently. The car also had very little power below 3,000 RPM.
In an effort to correct things, we went to our favorite local tuner Church Automotive Testing who was confident they could fix our car’s issues using HP Tuners latest Ford tuning suite.