Diesel Truck Forum - TheDieselGarage.com - View Single Post - Early 99 People; You must upgrade your PCM
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post #5 of (permalink) Old 01-14-2007, 06:33 AM
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Originally Posted by ndrorydr
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;

does the torque converter unlock when you touch the brakes? and what speed does it unlock on its own?

Oh and is black smoke nessasarly a good thing?

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