Ez tcu upshift issues

Todd

New member
Recently installed an ez tcu for my 4L80E transmission. The transmission will not upshift until I let off the throttle. Controller has been replaced and the wiring has been gone over thoroughly. Recalibrated the tps multiple times, this transmission has a 2014 6.2l engine powering it which was standard. This is why I went with the ez tcu, wondering if this is a program issue with the factory pcm?
 
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