[Dfishrmn]

Originally Posted by JackandJanet

Just shows how different trucks are like different people. No two will ever be exactly alike. But, I agree, it's kinda weird how they could be "opposite". I should probably try bumping the timing again now that I have custom tunes. Possibly, I'd get different, and better results.

- Jack

I have played with the timing a bit to see if there is a benefit. At +.25 it seemed peppier but less torque. Also had an increase in MPG (this was when I was still running the AC constantly). Tried +.50 but that almost seemed to erase any benefit. I am now running it at the 87 custom performance +0without the AC mostly and mileage is about the same as +.25 with the AC on. I like the way the truck feels at +0 better than with advanced timing. It just seems to pull harder. I'm not a racer, just normal mixed city/highway with light hauling and towing. I will try it again at +.25 now with the cooler weather and see if it makes a difference.

Also my idle seemed to smooth out at +.25, now at +0 it is slightly rough at times.

Thanks for the input, I think ethanol may be here for a while and this may help sort out if we can tweek things to better advantage.