E55k Tranny in clk500 ...
The TCU reflash is simple, just send it in for a reflash and it will improve shift speed and in some situations change your shift points depending on your application. I believe Speed Tuning USA actually has a package deal for Engine ECU + TCU reflash, so you may want to contact them and go ahead and do both if you haven't already.
Certainly, whenever you are ready for stage 2 feel free to contact us at your convenience.



