Is it bad to race in Tow/Haul mode? All I can feel is that it increaes line pressure for firmer shifts and holds third gear longer. If you ask me this seems ideal for drag racing. But I just want to make sure nothing bad will happen. Will anything bad happen? Is this a good idea to have on for racing?

 

Thats a pretty good question... I have been wantin to know that too. I know it helps gettin unstuck from mud haha, but i dunno bout racin. Can ne one help?
-Kurt

 

I read somewhere that ir changed the shift point to 5200 from the 5600 stock...

 

I'm pretty sure on mine, when your're in tow- haul mode at wide open throttle it shifts at 5000 RPM from 1st. to 2nd. You can feel it stumble as it goes into 2nd. In D it will shift at 5600. It would be nice to find a way around this. I think we need more comments on this subject. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

 

As far as my experiance goes, tow/haul doesn't work at WOT. It extends the shift points out under normal driving and under a load. I think Brandon has it right.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Fast4.8:
<strong> It extends the shift points out under normal driving and under a load. I think Brandon has it right.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">But at WOT it shifts sooner than what it does in Drive. <img border="0" alt="[judgement]" title="" src="graemlins/gr_judge.gif" />

 

Guess that answers everything... thanx guys

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Mongoose Z-71:
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif"> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> But at WOT it shifts sooner than what it does in Drive. </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Not on my truck. I will play on the way home in the morning with it and verify. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

<small>[ May 06, 2002, 09:31 PM: Message edited by: Fast4.8 ]</small>

 

Here is the results on my tests this morning on the way home and today on the way to work.

Normal Accelaration
Tow/Haul OFF
1- 2 @ 1800
2- 3 @ 2000
3-od @ 2000
ON
1- 2 @ 2400
2- 3 @ 2800
3-od @ 2400

WOT
T/H OFF
1- 2 @ 6000
ON
1- 2 @ 5600
These tw were very consistant, I did it 4 times each.

Now I have my shift points adjusted with my HPPIII. but as I have heard before, when T/H in on, the HPPIII point are not used.

<small>[ May 06, 2002, 07:57 PM: Message edited by: Fast4.8 ]</small>

 

Hmm... maybe its my truck then? But with no hyp3 programming and tow haul on, the truck seems to shift firmer into 1,2,and 3 gears. Fast 4.8 you are right about 3rd into od. it shifts sooner. Hey, thanks for doing the research also Fast 4.8!!! <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" /> <img border="0" alt="[Truck]" title="" src="graemlins/gr_truck.gif" />