Mine has the tip ecu upgraded from ESmotor. It did it before the ECU and still doing it so I don't think it's a software related issue. Will confirm if it does it in sport mode

 

Ok guys so 'I' this guy right here, figured out what was the problem there's a brace ( cross bar) for the tiptronics cars, polished that looks like a V that wasn't tighent enough, a 15mm socket is needed to tighent it and voila no more thump, clunk, feeling like we were going to blow up the transmission.

Hope this helps if somebody is experiencing the same issues

 

Sir which cross bar r u referring to?

 

You'll see it when you look underneath the car, V shape polished silver, runs from one side of the car to the other under the tranny, kind off holding it.

Let me see if i could get a picture.

 

Will put the car on the left on Saturday and check

 

Will put the car on the lift on Saturday and check, thank u sir