a 2003 Dakota SHOULD have the 3.7L v6, same engine family as the 4.7L they dumped the 3.9/5.2 in 01 I think it was? but kept the 5.9L in the R/Ts through 03, I don't think there were any 04 R/Ts

I think instead of TSP--Throttle position sensor, you meant CPS--crankshaft position sensor. the TPS resets every time the truck is started. the CPS is what the computer sets the timing off of. before I knew a lot about these trucks, I thought I'd fill the tank up with premium, and twist my distributor to get more timing and more power.

with the timing light on it and I was ready to go, twisted the dizzy, saw the timing advance, and about 3 seconds later, it went right back to where it was before!

but if you move the CPS, you can gain timing through the entire RPM range and the computer doesn't realize what's happened.