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My 47RE wont shift if my Quadzilla tuner is on anything other than the stock setting at WOT from a dead stop.  If I let off just a bit it will shift.  I know its not slipping, almost feels like torque management de-rating the engine till i let off.  Any help is appreciated.

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Sounds like a TV cable adjustment issue in my uneducated opinion. 


Other then that have you done a band adjustment recently or checked it? I know I got mine too tight once and it wouldn't shift outta first at all so could be that. 

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What is your transmission configuration? Mods? Converter? Stall speed...?

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Trans is pretty much stock.


All new bands and clutches before winter.  


When it doesn't shift it's like i hit engine speed limit before it can shift.

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