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Upshift vs. Downshift MPH setting differences

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Old Aug 20, 2008 | 04:53 PM
  #11  
trever1t's Avatar
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Originally Posted by rel3rd
I hope it isn't/wasn't important because neither my truck, or my car's PT and WOT settings are anywhere close to one another.

Even 100% untouched stock, my truck's numbers didn't match. I guess you could always enter the WOT MPH numbers into the PT 100% TPS boxes, and simply let the software "smooth" the graphs...Hopefully, one of the more knowledgeable tuners will weigh in on that one though.

BTW, Congrats on new best ET!
I have noticed that the stock programs have the WOT at a mph or so higher than the partial throttle tables but am not clear if the spread is higher what the effect would be?

Thank you, my last best was too close to the line to claim 11 so I had to get it a little deeper.
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Old Aug 20, 2008 | 05:06 PM
  #12  
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Originally Posted by trever1t
I have noticed that the stock programs have the WOT at a mph or so higher than the partial throttle tables but am not clear if the spread is higher what the effect would be?

Thank you, my last best was too close to the line to claim 11 so I had to get it a little deeper.
I'm not sure I even understand why they list 100% TPS in the PT tables anyway.

If 100% TPS is WOT, then how can it also be considered PT?


FWIW, my cam only Camaro's best is also an 11.67. I felt the same way about being in the 11's. I wanted to be in deep, or not at all...lol.
Several years ago I got booted from my local track for running an 11.98 when the rollbar rule was 11.99 and lower. I was pissed...
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Old Aug 20, 2008 | 08:46 PM
  #13  
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I adjusted my part throttle due to my truck being so heavy. I get up to speed much quicker now w/out having to give it so much gas.
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Old Aug 20, 2008 | 08:49 PM
  #14  
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Which way? Let's see some PT tables!
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Old Aug 20, 2008 | 08:57 PM
  #15  
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What i did was set my WOT Upshift MPH tables down really low subtract 25%. And just use RPM to Up shift with..

Down shift is about 9-10MPH below what it actually upshifts at.


SO say your shifting 1-2 at 6000rpms and 50mph. I would set the Down shift to 40mph.

i have my 3-4 up shift table maxed out MPH and RPM...





That Spread sheet works great!!!
You can do your Normal and Tow Haul to get them right.

http://forum.efilive.com/attachment....2&d=1185999343
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Old Aug 20, 2008 | 10:06 PM
  #16  
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I have 3.73's and i shift into 3rd at just under 100. 96 i think, i can kick it down on the hwy and 75 and drop to 2nd. I would have to look on my laptop to see the actual mph in my tune but it seems to me that the shifts don't actually occur exactly when your tune commands them. these motors can rev, don't worry about reving it to 6k or 6300. With a stock cam you aren't going to have much power past 6 but it isn't going to hurt anything so if you want to downshift at a little higher mph you will be fine. Just keep the up/down relationship somewhat close to stock.
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