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Old 08-01-2014, 11:25 PM   #1231
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4wd, really? figured that would slow you down. do you go back to 2hi at some point ?
It will slow you down a little as far mph but will net you a quicker time, unless your gonna get drag radials, and no on your truck you can shift out under a load, only the auto systems will shift out under a load but some will argue that it still won't but I know it will because I had one in my 12 and there quite a few more that have been trying it too and it's working.
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Old 08-02-2014, 08:22 PM   #1232
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Can you please update my time again. thank you.
13.168 @101.42 2mnyprojects 2013 Fx4 SCREW 3.55 Southern Speed Inc. tune only
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Old 08-02-2014, 10:14 PM   #1233
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updated
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Old 10-06-2014, 12:10 PM   #1234
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Can I be added to the list please?
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Old 10-06-2014, 01:15 PM   #1235
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List updated. Nice run too.
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Old 10-06-2014, 07:48 PM   #1236
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List updated. Nice run too.
Thanks! Hopefully in a few weeks I have a new time for you that starts with a 12!
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Old 10-07-2014, 11:49 AM   #1237
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It will slow you down a little as far mph but will net you a quicker time, unless your gonna get drag radials, and no on your truck you can shift out under a load, only the auto systems will shift out under a load but some will argue that it still won't but I know it will because I had one in my 12 and there quite a few more that have been trying it too and it's working.

That's not true. If you think your transmission is shifting from 4 to 2wd under load (pinning it in 1/4mile) your high buddy. The indicator will say 2wd but it won't shift under load. Trust me. You my friend, are wrong.
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Old 10-07-2014, 12:01 PM   #1238
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That's not true. If you think your transmission is shifting from 4 to 2wd under load (pinning it in 1/4mile) your high buddy. The indicator will say 2wd but it won't shift under load. Trust me. You my friend, are wrong.
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Old 10-07-2014, 12:14 PM   #1239
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[QUOTE=scap99;3743240]Read this book, please...

[url]



Not trying to start a fight, but my truck (5.0) would shift out with the stock tune. As soon as I tuned it that stopped. The reason I believe this happened is because in the stock tune the throttle plate would close between shifts enough to create a vacuum to pull the hubs out but once tuned this no longer occurred.

I do agree, using 4wd will lower your trap speed (MPH, by about 2mph in my case) but will also lower (improve) you ET in the 1/4 because you 60' is so much improved on a stock like tire.

I will also add that if you feel the need to argue this please use the search function first. If that doesn't suit your fancy then please, start a new thread about it, not let's not congest this one too much.
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Old 10-07-2014, 09:09 PM   #1240
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Possibly the tune is opening up the throttle body more and keeping it open + the shift point.
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