PCM Upgrade planning
Senior User
Joined: Jul 2009
Posts: 246
Likes: 1
From: Lynnwood, WA
I have been working with Bill from powerhungry and he sent me a list of DCP-422 boxes but didn't specify any to pick over others or ones to avoid. I don't like my stock shifting. Seems to lug and shift to much in whindy hilly roads. With my tune installed it much better.
I am having other strange issues. 10mpg, noisey engine, and a steady knock at idle, and hard starts below 40 degrees. Replaced injectors, HPOP, Glow plugs, valve cover wiring, ICP gauged installed and Fuel pressure gauged installed show good flow. Jim Rose mentioned to me that the early 99 had some problems with tunes so I thought this might be something I try.
Any post or site out there that gives more info on the different PCMs? I have seen lists with a small description but it generally has to do with US or CA, cold winters or warm winters. nothing to do with shift patterns.
I am having other strange issues. 10mpg, noisey engine, and a steady knock at idle, and hard starts below 40 degrees. Replaced injectors, HPOP, Glow plugs, valve cover wiring, ICP gauged installed and Fuel pressure gauged installed show good flow. Jim Rose mentioned to me that the early 99 had some problems with tunes so I thought this might be something I try.
Any post or site out there that gives more info on the different PCMs? I have seen lists with a small description but it generally has to do with US or CA, cold winters or warm winters. nothing to do with shift patterns.
Butt-Head
Joined: Apr 2004
Posts: 9,418
Likes: 2,911
From: Reed Point, MT
Once you pick a 422 box, just get tunes from any vendor that are compatible. Like I said, most are going to be PMT1 based programs.
If you need to try a stocker, any one will work....be aware though that the shifting may be way different than what you're used to or it may be very similar. To me, most programming sucks. They run ok, but the shifting is stupid.
I have quite a few different DPC-422 trucks. I prefer the NVK2 over the NVK4, the PMT1 over the PMT2, and any one of them over the MRT2.
If you need to try a stocker, any one will work....be aware though that the shifting may be way different than what you're used to or it may be very similar. To me, most programming sucks. They run ok, but the shifting is stupid.
I have quite a few different DPC-422 trucks. I prefer the NVK2 over the NVK4, the PMT1 over the PMT2, and any one of them over the MRT2.
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
I have been working with Bill from powerhungry and he sent me a list of DCP-422 boxes but didn't specify any to pick over others or ones to avoid. I don't like my stock shifting. Seems to lug and shift to much in whindy hilly roads. With my tune installed it much better.
I am having other strange issues. 10mpg, noisey engine, and a steady knock at idle, and hard starts below 40 degrees. Replaced injectors, HPOP, Glow plugs, valve cover wiring, ICP gauged installed and Fuel pressure gauged installed show good flow. Jim Rose mentioned to me that the early 99 had some problems with tunes so I thought this might be something I try.
Any post or site out there that gives more info on the different PCMs? I have seen lists with a small description but it generally has to do with US or CA, cold winters or warm winters. nothing to do with shift patterns.
I am having other strange issues. 10mpg, noisey engine, and a steady knock at idle, and hard starts below 40 degrees. Replaced injectors, HPOP, Glow plugs, valve cover wiring, ICP gauged installed and Fuel pressure gauged installed show good flow. Jim Rose mentioned to me that the early 99 had some problems with tunes so I thought this might be something I try.
Any post or site out there that gives more info on the different PCMs? I have seen lists with a small description but it generally has to do with US or CA, cold winters or warm winters. nothing to do with shift patterns.
Senior User
Joined: Jul 2009
Posts: 246
Likes: 1
From: Lynnwood, WA
ya, he spent 4 hours with me when he was out in Monroe for Dynomites event on the 10th. I haven't been able to test for any milage increase since I took my truck apart to check for a weak injector and to do a compression test. Can't believe I can't find a compression tester around that will work on the 7.3. Had to order one so I am just waiting. Once I have those compression numbers (I have my fingers crossed they are all fine) I will pull my injectors and view the seals and washer. If nothing there send the injectors back to Jim Rose so he can confirm they are all in good shape.
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Posting Guru
Joined: Apr 2009
Posts: 2,447
Likes: 1
From: Northern Idaho
ya, he spent 4 hours with me when he was out in Monroe for Dynomites event on the 10th. I haven't been able to test for any milage increase since I took my truck apart to check for a weak injector and to do a compression test. Can't believe I can't find a compression tester around that will work on the 7.3. Had to order one so I am just waiting. Once I have those compression numbers (I have my fingers crossed they are all fine) I will pull my injectors and view the seals and washer. If nothing there send the injectors back to Jim Rose so he can confirm they are all in good shape.
Senior User
Joined: Jul 2009
Posts: 246
Likes: 1
From: Lynnwood, WA
Will do, waiting for my compression tester to come in the mail. god I hope if fits. I got one locally that says fits the 7.3l and it does have a fitting for it but you can't connect to the fitting with the coupler due to the valvetrain. The one I ordered is just the 7.3l glow plug adapter with a hose so it should work.
After that test I am pulling all the injectors out to visually check the orings, washers and the holes they go into for scoring or debris. Jim Rose said he would take a look at the injectors for me.
If that all checks out then I might just have to give jody a call and see if he will do a drive before you buy tune. then I can compare that to Bills and hypertech and see whats working and what isn't.
After that test I am pulling all the injectors out to visually check the orings, washers and the holes they go into for scoring or debris. Jim Rose said he would take a look at the injectors for me.
If that all checks out then I might just have to give jody a call and see if he will do a drive before you buy tune. then I can compare that to Bills and hypertech and see whats working and what isn't.
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
Well please keep us posted with what you find. I am interested to know what you find because I think my engine is a bit noisier then it should be, but that could be me. When I hear another ford truck that is 99 to 03 they always seem to be quieter then mine and I'm not talking exhaust noise, I'm talking just engine noise.
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Posting Guru
Joined: Apr 2009
Posts: 2,447
Likes: 1
From: Northern Idaho
Well have you noticed yours is louder then some of the diesels out there? Maybe it's just me but yours and mine seemed to have about the same amount of noise. Maybe I just have PMS and that's all there is to it but I'm still interested in finding out his results.
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
Mine did get a bit quieter lately for some reason... either that or I'm just now getting used to it.
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