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The Comp cams extreme energy cam has worked awesome for me in several different 4.0 builds. The Sumit Racing site lists it as not not OBD2 compatibale but the Comp cams site says it is and I have found it to work very well with both the stock ECM and especially well with the addition of a Jet...
I keep getting a trouble code 1391, intermittent loss of cps. Vehicle runs great, both crank and cam position sensors were replaced with known good units. any ideas?