[johnmo]

Interesting. I haven't received a letter yet.

 

[johnmo]

It'll say "OK" until it drops to 35%. The percentage will drop down to about 15% before it starts telling you how many miles you have left. It will tell you every time you start it when you have less than 300 miles left. At the end of that 300 miles, you're sitting at about 10%. That's as far as I've pushed mine. I assume it starts detuning the engine at that point.