anyone know how to tune to keep the rpm's from falling off during a shift point? 2000 Silverado acts like there is a window between shifts.
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anyone know how to tune to keep the rpm's from falling off during a shift point? 2000 Silverado acts like there is a window between shifts.
Did you remove the engine TM? I would also look at a higher shift point. Other than that I am not sure what else can be done. you could quicken up the shifts, I set mine in 1st to .150 and in 2-3rd to .125. Also up the line pressure a bit and it should shift quick and snappy, if thats what your looking for.
No I didn't remove the TM. I'll give what you said a try. I just received the S/W and will get it set up tonight. Thanks for the input!
I really honestly do not really understand what you mean by keeping the RPM from falling off during a shift???
With a higher stall converter there is less RPM drop off between shifts.
vortec350, this isn't in my truck. It's a friend of mine. It's stock and doesn't have a stall in it. He just wants a 93 octane tune. The RPM's drop off a little when it changes gear and he's not happy with it. I never had that problem out of my 97.
I think you can try to remove all of the TM in it, but what your talking about can only be cured with a higher stall TC. Raising the shift points will help some, but not alot.
Chris
a RPM drop is inherant because of the gear change
I'm guessing you mean an "excessive" rpm drop?
if so then kill engine torque management (don't do the same on the tranny if it's stock). Speed up the shift timing and maybe bump up the pressure a tad.
Sounds like the torque convertor is staying locked between gears. I unlocked my convertor between shifts to keep the RPM up.
<div class='quotetop'>QUOTE(Nick @ Feb 1 2006, 08:09 PM) [snapback]43118[/snapback]</div>Quote:
a RPM drop is inherant because of the gear change
I'm guessing you mean an "excessive" rpm drop?
if so then kill engine torque management (don't do the same on the tranny if it's stock). Speed up the shift timing and maybe bump up the pressure a tad.
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Yes, exactly. I'm trying to get the S/W loaded and then I'll start playing. I appreciate the feedback from you guys. :thumb:
<div class='quotetop'>QUOTE(RedHeartbeat @ Feb 1 2006, 08:35 PM) [snapback]43125[/snapback]</div>The converter shouldn't be locked if the tranny is still shifting should it? Mine only locks up in OD if it's in OD and 3rd if I have it in 3rd.Quote:
Sounds like the torque convertor is staying locked between gears. I unlocked my convertor between shifts to keep the RPM up.
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Well there is an option called shiftlock, you can enable or disable it. It decides whether the converter stays locked or unlocked during shifts. I'll get a screenshot of it when I get on my laptop.
I don't know anything about all this tuning stuff, I guess I should just shut up and read. I just didn't think your converter would lock up until like 40mph in 3rd or OD. What would be the advantage of it locking up between shifts?
I dont see an advantage to it. Hey man just by reading you will leearn tons, i started reading when I first got my Nelson tune in january 2005 and in the first year I have learned tons and starting tuning myself not too long ago! I would recommend learning as much as you can, even if you dont end up tuning on your own, at least you will have more knowledge of what you think needs adjusted on your truck.
Chris
Yeah I would like to get the stuff & learn how to tune my own truck but I don't have the cash. So I'll just read for now and maybe interrupt yalls discussions once and awhile. :laugh:
lol thats what i did for awhile, just chipped in where i could and when I finally could put what i learned into play, it took awhile for me to save up.