Installed an NVK5 PCM which I got from DP Tuner this week in preparation for getting my injectors rebuilt. HOLY &#@%!!! It feels like I have a new truck even with my ailing and weak injectors. The shifting is SOOOO much better; more solid and timed better with speed. The XLE4 shifting always felt like it was never engaging the TC enough and shifting too soon between 3 and 4. I swear I have a whole new gearbox with this PCM. Oh, and I now have black smoke. Feels like I have a fuel box on it now; there's so much more power. Taking the ponies riding tomorrow; can't wait to see what it feel like hauling the gooseneck. Can't even imagine what this truck will feel like when I get the Stage 1 single shots and DP Tuner F5 installed. I also cut out the PCM case for easier install of my future F5 chip:sly:
If you have an early 99 and have not done this upgrade, call DP Tuner and get a PCM before they sell out this batch they just got. Best $200 I've spent yet on this truck.
The shifting is SOOOO much better; more solid and timed better with speed. The XLE4 shifting always felt like it was never engaging the TC enough and shifting too soon between 3 and 4. I swear I have a whole new gearbox with this PCM. Oh, and I now have black smoke. Feels like I have a fuel box on it now;
I did this upgrade and yes..what a difference a new PCM makes.
To answer your question...the NVK family I believe does unlock the TC when the brakes are applied. I wanted to keep the TC locked to help with slowing down when the camper is in tow...so went with the PMT family. I believe they are basically the same with the exception of the TC lock/unlock thing with the brakes.
As for smoke...some people are really into it. Some not.
I did this upgrade and yes..what a difference a new PCM makes.
To answer your question...the NVK family I believe does unlock the TC when the brakes are applied. I wanted to keep the TC locked to help with slowing down when the camper is in tow...so went with the PMT family. I believe they are basically the same with the exception of the TC lock/unlock thing with the brakes.
As for smoke...some people are really into it. Some not.
ok couple more questions as I am still learning all theis junk for our trucks, I noticed on the DP page that Jody can do stock tweeks, is the torque converter lock/unlock up speed, and the brake unlock something he could tweek in the PMC programming its self? I do a lot of mountian towing and I would realy like the torque converter to stay locked down to say 28mph on coast for extra braking.
Everyone keeps talking about the improved shifting. That wouldnt do much for my early 99 6spd. If upgrading will help regardless, I should probably go ahead and ante-up. Sam :grd
i just put an NVK3 computer in my early 99 automatic 7.3, theres definitly a big improvement in drivability and power, i like it alot better.
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