I agree that many engine issues experienced are somewhat related to engine programming. These are seemingly delicate aluminum engines without much forgiveness for overheating or detonation. They have however been used in production vehicles for approx. 40 years without end. This is a wonderful example of a good design put to good use and speaks worlds of the engines potential long term. It should be noted that land rovers run at higher engine temperatures (over 200*) as normal in attempt to maintain emissions standards during production. Also they are run lean in many situations, not rich. This also reduces HC emissions, but increases chances of harmful detonation and further increases engine temperatures. Because of the computer systems involved, most land rovers are NOT easily reprogrammed. I believe the GEMS engines and older hot-wire lucas systems are programmable my many different firms, but often cost more than is reasonable if you are used to reprogramming your typical American or Japanese vehicle. The bosch motronic is used on the 99 up models and is even more difficult to tune, as it uses flash programming and the code is not fully understood as of yet. If you want to make the engine incur less wear and tear from a programming perspective, you are limited in choices based on your current management system. Replacement of engine management with some aftermarket systems may be better in the end, and running the engine around 180 degrees will extend the life as nucleat boiling will be kept to a minimum. This reduces the chance of warped heads, cracked heads, slipping sleeves/liners, and other heat related engine concerns.
In the end, many of these overheating/engine problems may be related to programming..We are trying to run an engine designed in 1962 in a time that lacked ALL forms of emissions control, in a very complicated and picky world of EPA standards and guidlines that differ all over the world. The pressures from goverments to maintain strict standards cause manufacturers to do whatever is necessary to sell the vehicles, which in this case means running the engines too hot and too lean for long term service life. Its not a DOHC honda or toyota with top notch gas-flow technology. Its a 1962 buick v8 hanging on to production for dear life, at whatever the cost.