1992 5.2 Magnum

rnaz said

They can't give it nearly the proper amount of timing or fuel with the JTEC controlling it unless you go with a custom tune.

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Well I'm running a stroked 360 on the stock OBD-I PCM in my 1995 Grand Cherokee. It runs well, am I leaving power on the table by not being able to tune you bet. But it still works. There are a couple ways to trick the PCM.

My best run was 13.344 @ 101.44mph. And thats in a 4x4 with a 3" lift and 31" tires with stock gearing.