Transmission shifts rough and slips.

[ray_delosreyes1]

2020 3.0. 21k miles daily driven tuned on e50. I drive regular with the occasional race here and there. Maybe 4 hard pulls a month? Anyways I never had any issues with trans until recently my Ecutek wouldn’t connect or show the values/ parameters on my app. Since it stop showing my gauges on the app the trans was shifting rough 1-2 and slips 3-4. BUT, in manual mode shift fine up and down no issue.. anyone ever experience this and got it diagnosed of fixed? I’m just trying to throw it out there before I pay my local shop to try and diagnose it. Also, no check engine light or anything lit up on the dash.

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[Thraxbert]

Show me your battery charge level with Protools or Bimmerlink.

How is your ethanol configured? Who made the kit, how it's wired, and how it's integrated.

When is the last time you unhooked your battery and waited 10 minutes?

 

[ray_delosreyes1]

I have new battery, I just disconnected it and trickle charged it all day yesterday . E is on Visconti flex fuel kit, it was plug and play with their harness.

 

[Thraxbert]

Was the battery registered and (if different from OEM specs) coded to the car?

Do you use XHP?

//edit: Does their PnP kit still require you to hijack connectors in the footwell with a bit of de-pinning? If this has somehow jiggled loose, come undone, or in any way proves fallible, it could cause all manner of bizarre vehicle bus behavior.

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