A subject after my own heart.
There is a member of AudiWorld KjellA, who swaped his 97 A8 for an FE S8 and bemoned the shift patterns on his new trans. On his 97 TCU he was able to bounce the needle off the redline without upshifting while in Tip and, once again, while in tip there was no kick down while under hard accelaration.
There was a change in TCU coding about the time of the FL or maybe a bit earlier as the only codes a PF TCU would accept were 00000 or 00010. From the FL onwards coding was available dependant on the market and it is possible to recode boxes to suit driving styles. In the midddle there seem to be some TCU on PF cars (my 98 S8 for one) that have a FL code. In my case it was 00101. KjellA found that hecould recode his TCU to 00131 which gave it the charateristics of his on 97 TCU allowing full control while in tip. As yet I have not been able to achive this as my TCU seems only willing to accept 00101, 00111, 00011 and 0001. 00011 puts the box into Limp Mode so thats no good. 00111 seems to make the box more responsive and a bit quicker to shift. 00001 dosen't seem to do anything that I can tell. I have some links at home that explain all the codes etc. I'll post when I get home.
I want the complete control codes on my box so that while in tip I don't kickdown and can take it to the redline and hold it there without an upshift. Work in progres.
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Conan (the Librarian)
Watch it if you dare
Currently,
2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block.
1997 4.2 A8SQ - the Projekt. 12 years and ongoing!
1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard
2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion.
2005 C5 Allroad 2.5TDi FE - Grey - Workhorse.
2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter.
Previously
2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex
1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure.
1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex.
2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on.
1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8.
And a list of non VAG going back 40 years before I saw the light. 
Last edited by Conan_the_Librarian; 24th March 2009 at 01:23 PM.
Reason: Correct error (emboldened)
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