I'm considering a (dual clutch automated manual) DSG transmission equipped car like the VW GTI. Mitsubishi also has their SST dual-clutch on the 08+ Ralliart and EVO X, and I'm sure there are others out there.
Based on a quick read of the Street Touring rule book, it looks like there is no provision to modify or reflash the factory transmission control unit (TCU) in any way. I'd assume my interpretation is correct, but let me know if you disagree.
The closest things I see are:
B. Original equipment traction control systems may be electrically disabled,
but not removed or altered in any other way
F. ..Traction control parameters may not be altered..
Specifically what got me interested in doing this is that the VW DSG system apparently does not allow you to ride the rev limiter and hold the gear you want to be in. Aftermarket TCU reflashes take care of that, and do things like increase shift speed, change shift points, offer more launch control customizations, etc. Example: https://www.goapr.com/products/tcu_upgrade_dq250_mqb.html
Anyone have thoughts about this being "in the spirit of ST" and thus worth writing a letter to propose a rule allowance for this?
Also, I assume this is definitely not allowed in Stock, but would be allowed in SP and SM.