Quote:
Originally posted by Sean:
I tried this adjustment as well for my 2001. But when I bumped the timing to 14 BTDC (my original setting was right on @ 10 BTDC), the engine ran a little on the rough side, and my transmission would down shift late. I also noticed that when starting it up first thing on a cold morning, again the transmission was late, this time up shifting to 4th. The next day I bumped it down to 12 BTDC, and it seems to run much better, and with a little extra respose when you hit the gas to boot! laugh


The trans won't shift into OD when it's cold. If I drove a lot at sea level I would probably adjust the base down, but I'm usually at or above the 5k foot level most of the time. The truck just seems to run better set a bit higher. I've been getting about 17 mpg with the settings this way. Not sure about the altitude making a difference, but whenever I make a trip to So Cali it's like driving a hot-rod!. Low altitude, the ultimate power mod smile

Charlie
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Charlie

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