No power after late 99 PCM upgrade

[bjs505]

My old PCM was an xle4. Bought a xc3f off of eBay. With the new PCM I have no power. Do I need to have it reprogrammed? I thought it was plug and play? Thanks in advance for your help.

[bjs505]

To the top.

[bjs505]

Night time bump.

[bjs505]

Morning bump.

[stroker0920]

Are those two PCM codes interchangable? I think you have to reprogram the PCM when you get a different one with a different code than your original.

[bjs505]

How would I reprogram it? I assumed that any dpc-422 family PCM were interchangeable with the e99 pcm. Starting to think I should have kept the duramax.

[stroker0920]

You'd have to go to a Ford dealership.

[Jacob@DP-Tuner]

DPC-422 should be a plug and play for the E99 truck. As for being down on power, there is a chance your original pcm had been reflashed with a performance tuner at some point and now your running on a stock PCM.

We can flash PCM's with stock or performance tunes if you're interested, let us know.

[bjs505]

Let me rephrase "no power". Truck barely revs to 2000 rpm. And it takes forever to get to 2000 rpm. That's in park, no load!!

[dieselcrawler]

My early '99 was rather gut-less when stock... recent addition of a DP Tuner brought it to life. The rev issues is odd though... do you still have your original PCM to put back in?