2010 Ranger Jet Chip install...
Ranger Sport 4.0L 2wd 5spd man. I installed the jet Chip as the second part of an update to improve street driven performance, torque/power 1500-3000 rpm. This update along with a K&N 57-2561 have improved torque/power in the 1000 > 3000 rpm range for daily driving, light hauling and trailer towing. Acceleration through the gears has also improved. Gas mileage city/hwy 24 mpg, hwy only not yet checked.
Device does what it claims to do; prevent vehicle from shifting into V4 mode. This doesn't completely stop the annoying vibration that occurs between 1000rpm and 1250rpm. I believe there is some other inherent deficiency that Chevy can't diagnose or chooses not to address. This vehicle should not vibrate or shudder at a certain rpm.