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BeckyD @ James Martin Chevy


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Old 02-18-2018, 09:40 AM   #1
cmitchell17

 
Drives: 17 2SS, 8L90, Cam, Heads, E85
Join Date: Dec 2016
Location: US
Posts: 1,196
Anyone else have WOT Shift RPM Problems?

So I have completely gone back to the stock tune and even back to regular gas from E85 on the stock tune and my car still shifts about 200-300rpm lower than what is commanded in the stock TCM tune file. I know this has got to be hurting shift recovery.

The short shifting in first gear is a given and I've heard that from many people. Usually it will shift out of first at WOT at about 5600, but I don't understand why its happening in the other gears? Does the shift points rely on input from the torque model also? I just don't get how I went completely back to stock and the same thing is happening?
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Old 02-18-2018, 12:23 PM   #2
Snowblind

 
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Drives: '16 2SS / '05 SRT10 Ram / '65 bu
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Are you on the stock size tire and are you using HP Tuners ?
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Old 02-18-2018, 06:22 PM   #3
cmitchell17

 
Drives: 17 2SS, 8L90, Cam, Heads, E85
Join Date: Dec 2016
Location: US
Posts: 1,196
Stock size Michelin PS4S and yes I'm using HP tuners, it just doesn't make sense that I went completely back to the stock tune and it still does it. I'm not sure if its always been a problem I need to look back on my logs and see. Only thing else it could be in the ported intake or tb or the rotofab, but I doubt that could do anything.

Looking at some of my old logs, they look better but they are still inconsistent, especially 1-2 shift.
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Old 04-01-2018, 06:39 PM   #4
aka Reckless
 
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Drives: 2016 2SS Camaro
Join Date: Sep 2016
Location: Cumming, GA
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Having issues with mine not shifting and hitting the rev limiter. Instead of upshifting it bangs the limiter and then throws codes P2808 and P700. Going to see if the tune can be tweaked.
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