Has anyone heard of this? The SRT guys use it with success, it just solders to the 3 wires going to the map sensor. I can't see why it wouldn't work, a voltage clamp is a voltage clamp.
/not big on cutting the harness
http://www.gcsrts.com/dasmopar/clamp2.asp
/not big on cutting the harness
http://www.gcsrts.com/dasmopar/clamp2.asp