Ok, I spent the day doing research and found the answer. This is normal behavior for the tiptronic transmission. It has nothing to do with the EUROCHARGED tcu tune. The fix is to just let it autoshift on its own from first to second at redline. There were tons of threads fron 2006/07 detailing this behavior long before there was a EU TCU tune.
Originally Posted by
Da55id
Although I have been happy with my EC TCU tune, When I floor it in 1st and 2nd, but then let off the gas just below redline in 2nd and manually upshift to third, the car won't upshift for three or four (very scary) seconds while the rpm stays at or near redline even though I've totally released the gas in an attempt to drop the revs. Is this what you are talking about Doc, or is it something else?