1997 Grand Cherokee Limited, 5.2L 4x4
Bought my puppy a few months ago with 118,000 on the odo, (it's got 122,500 now). I love this truck. Dropped a K&N intake and FlowMaster exhaust in. Watched my mileage go from 13 to 23 mpg. Wanting to reprogram but none of the major suppliers does one for the 5.2. Found a Volo Performance OBDII plug-in that is supposed to be the way to go (VP-12). Got any ideas?