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6r80 stutter only in 1st gear?

Dom1232

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Joined
Oct 16, 2019
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Location
Arizona
First Name
Dominic
Vehicle(s)
Mustang GT
I’ve always had this issue even before modding the car and I caught it on a log tonight and thought I’d ask. My car is a 17GT currently FBO E85 going FI next week. Only in first gear from 1/4 throttle to 1/2 throttle I’ll get what feels like dips in the pedal like I’m letting off. 6R80 has zero issues aside from this. Shifting is crisp and this stuttering only happens in first gear less than 3/4 or full throttle. If I go WOT the issue isn’t there. This may not even be trans related and something my tuner can maybe iron out? Here I downshift to first and go WOT. I thought I’d ask here’s how it shows on the log.

3F4C7AD1-DBC2-4D63-806D-3BAB1DFFC5CB.jpeg
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