hey all,

I have an 03 e53 4.6is. I'm running the Dinan S3 kit wich includes Vortech V-2 supercharger running 9.5lbs of boost, I have 175K miles on the it. I also added an M3 steering wheel with paddle shifters from Mr. Paddle Shift.

This car is my daily driver and it puts a smile on my face everytime I start it up. However, I have been having an ongoing issue with rough downshifts between first and second gear. I often drive this car in sport mode with manual shifts. My service engine soon light is on most of the time. The code is failure of the tourqe convertter to lock up. My local shop is suggesting a new (rebuilt) tranny and also replaceing the tourqe converter at the same time. They are not able to issoloate the issue.

I would like suggestions on where to go from here...

Thanks,

TB