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WOT 2-3 will not shift hits limiter

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Old Nov 24, 2008 | 06:53 PM
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Default WOT 2-3 will not shift hits limiter

I have a 2002 T/A with a 4l80e swap done. I have about 1k miles on it or so. Since the swap i cannot get the 2-3 shift at WOT to shift. It runs all into the limiter. I have put my shift points all up, down, left and right, same with MPH. It still hits the limiter. I checked the transmission speed per the ouput RPMX60(rev.mile) and i am within .3 MPH. Only mods are exhaust, airlid and stall(3400).
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File Type: hpl
bouncing off rev wot.hpl (37.2 KB, 103 views)
File Type: hpt
Trans 2-3shift change.hpt (467.1 KB, 114 views)
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Old Nov 25, 2008 | 04:03 AM
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i have it all the way to 32 MPH right now and hit the limiter at 57 MPH. Shift RPM is 5000 it hit the limiter at 6700.
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Old Nov 25, 2008 | 05:55 AM
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From: on the dyno tuning in MD
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Had similar issues with a 4L80 swap once and never could get it right before the owner decided to put a manual valve body in it. It would skip right to second gear as soon as the car moved. Wish I could have found out if it was in the tune or something mechanical in the trans doing it. I had put a 4L80 transmission segment into the F-Body tune - is that what you did??
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Old Nov 25, 2008 | 10:49 AM
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I have HPtuners. 3.23 rear and 24.91 tire(275-35/18). I will try this tonight ^.
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Old Nov 25, 2008 | 02:53 PM
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i will try this later when the roads clear a bit. I would like it to work the correct way though and shift with RPM/MPH. Not just MPH, but i would settle for that right now. I just wonder if it is tune or transmission related??
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