I have a 94 cc dakota with a 5.2/automatic 2wd. I've installed the following performance mods with good results: dual exhaust, headers, open element K&N, Harland Sharp 1.7 roller rockers, dual electric fans, underdrive pulley, and mopar PCM. The truck ran really well with those mods and then I bolted on a M1 single plane intake. It improved throttle response and didn't hurt the bottom end but seems like it is running lean at the higher RPMs (above 3K). I'm pretty sure that the truck actually slowed down with the intake install. Well I decided to reset the computer after driving it over 100 miles with no improvement. The reset seemed to help at first but then it began to drop off in power again. ???????

I feel likethe PCM is not giving it enough fuel with the additional air flow created by the manifold install. Somebody give me some advice here.

Here's all I've got so far:

Maybe replace the injectors with some 5.9 injectors (if theyhave a higher flow)
Try a 5.9 mopar PCM (this sucks because Ijust bought the 5.2mopar pcm)
Try a stock 5.9 PCM (this sucks too because I'd hate to go back to stock ignition timing and rev limit)
Fuel Pressure regulator?
Oxygen Sensorreplacement?
Custom PCM Flash?

Any ideas or experiencewith this would be greatly appreciated.




BTW: I ran a 15.2 at the track with this setup. The truck ran a 15.4 minus the mopar PCM, electric fans, and manifold. I'd estimate that it was pulling around a 15.0 before the intake manifold install. With conservativegains for the fans, PCM, and intake, the truck should be around the 14.8 - 15.0 range

J