I am an original owner of a 2007 F430 with 9,000 miles. Just yesterday, after a longer than usual garage stay (lots of rain in Houston preventing this pony from getting some run time!), reverse gear failed to work after 40 minutes of driving. After cool down, no issues and then after returning home (another 40 minutes run time), still no issues.
I read about your ECU controlled relay and wonder if maybe I should consider your upgrade to prevent premature failure of my F1 pump? I read if the pump gets too hot "R" (reverse) will not engage.
Thoughts? Seems simple enough to install your ECU controlled relay.