Quote:
Originally Posted by JackandJanet
You're not alone in finding this to be a trial and error process! I actually went through the same reasoning as you did regarding the downshifts. Finally, I decided that since negative values referred to lower speeds, (part throttle shifts are governed by both speed and throttle position - in other words "load"), that I'd use negative numbers on the downshift side too to delay downshifting as long as possible. It seems to work out.
I've also cranked my Torque Converter lock/unlock points as far negative as possible too, since I don't drive like a scalded ape.  I prefer the way the truck drives now and none of this effects WOT shifting.
- Jack |
I think you're right. I originally had pos values on the downshift side, but the truck seemed to want to unlock at higher mph. So when I got home from work, I changed all the values to neg and it seemed to help in keeping the r's down. I have about 3 miles of secondary road @ 30-35 mph. I've found that if I turn the overdrive off, I can keep it in 4th w/ the t.c. locked up. I watch the instantaneous mph and it seems to help. I must admit, I was kinda sceptical reading all these posts about getting 2-3 mhg better. I check my mileage religiously with the trip od and a calculator. Before, I avg, 13.5 to 14.5. K&N cai, troyer u/d's, brisk plugs, magnaflow muffler and php tunes are my only mods so far and now I get 15.5 to 16.5. I still hv e-fans that I got off e-bay needing installed. Hope 2 to this on my next 6 day off stint.
I religiously try to stay under 2 grand on the tach. Or I have it mashed to the floorboard. No in-between for me!!