H3LZSN1P3R
You're doing it wrong
Yes thats my thoughts aswell, and yes 04.5 was a nightmare at times!Whatever the internals of the CP-ISB21-S3 (21+) pump are, I fully expect it will be the same. The external fuel connections appear different than the 21+ trucks, more like a standard CP3 of old and I expect that was done for fitment reasons. The 19-20 trucks will now have a different set of PN for the pump and fuel feed line and tune software but there were many mid-year changes that created similar situations in the past so it's no big deal. Sometimes getting parts for my 04.5 was a pain due to the change.
