Never tried on the V8 in the K900.
A few years back I tried on a different brand car.
any gains made in power were not really detectable
compared to the additional strain but on engine
The miracle add on controllers you see advertised
are just a scam to sell you a part and make a profit.
I'd rather hack the system so I could have the car start
with out the traction control active.
My understanding is the ECU can be controlled with the
right equipment like the dealers have, But at what cost to