Another website for ECU upgrades for the Crossfire states that Chrysler soldered the chip in instead of making in pluggable. I don't really want to get in there and break solder joints. The group is posted under Technical modifications and it is called powerchipgroup.com . The upgrade is stated to give over 20 HP with 93 octane and about 30 additional ft-lbs of torque. This is listed for $300 cheaper than Renntech and guaranteed.