Hi Lloyd,

The improvements are both substantive and subtle. And, some of the improvements I was alluding to are relative to the stock TCU while others are to relative to the older EC tuned TCU .

I don't drive this car (the slk32) much; I drive my SL55 far more often ... so switching back and forth between the 2 AMGs WHILE making changes to the transmissions in both (I changed the TCU in my SL55 to a newer gen and replaced its valvebody with a reworked newer gen valve body) .... makes it unlikely that I would be the best resource for chronicling subtle changes.

What I can say (again) is that the New program for the EC TCU (for the slk32 and presumably SRT6) seems to have solved the "odd" shifting issues I noticed previously (in gear changes to and from 2nd primarily). It feels like it shifts more quickly than the stock TCU (I should hope it does : ) SO .... I think I will continue to run it (whereas It sat on my shelf for a couple of years before) AND, I like it better than the stock TCU because the useless (to me) "winter" mode has been replaced with a very useable "manual" mode. Particularly useable with the paddle shifters : )

Speaking of paddles .... while I've enjoyed them in a stock SLK32 wheel now (for 4 years), I just installed a new wheel. I actually started with a plain stock SLK230 wheel and then Ivan at DCTmotorsports had his magicians re-grip it, flatten out the bottom a bit, and then wrap it to match my interior (and then I added the paddles and installed it this weekend) .

Cheers,
Chris