2009 4.0l, 245k miles. Only 'mods' is a throttle body spacer and screaming demon coilpack. The car has been for the last few weeks being sluggish on the higher end rpm. When the car gets around 3-4k rpm in all gears it acts like the governor is kicking in not letting go higher wether soft or hard on the pedal. I have recently (in the last 2 weeks
replaced the water pump.
In the last 3 days I've replaced bank 1 sensor 1 02 sensor (car was getting P0420 for several months but acted normal) as well as fuel filter. However, car is still having same Acceleration issues in all gears.