Abdul_f150
New Member
The guy I work with told me that roush’s calibration caused engine knock and that the custom tuning solved the issue. I’m only using premium fuel She deserve to be spoiled. I’ll post the new results as soon as i get them hopefully better resultsThe power drop off could be ECT or MCT getting too high and pulling spark, knock sensor activity etc...
Since this is a new install make sure you have Premium fuel in the tank, and try not to let the truck sit too long between runs on the dyno with the engine off, this just heat soaks the blower which will make the MCT climb and pull spark.
Run it in the highest gear you can and not hit the speed limiter, which is usually 3rd on the 6 speed trucks.