Does any one know of a tuner/chip that i can adjust the rev limiter on the 94 4.0 that I put in my 92? For some reason after I swapped this motor in,in place of my old tired 4.0,I ended up with a 4000 rpm rev limiter.The only difference in the jeep's was the donor was an automatic,and mine is a 5 speed.Any help would be great,this has been driving me crazy for over a year now.Thanks

 

did you swap the computor?

 

x2 the ecm controlls rev

 

Yes I have swapped computers,cps,distributer's with no change.The weird thing is when my battery was dieing the last trip in the woods due to an loose alternator connection the rev limiter would go away. I just dont know???