Isn't 'indirect' injection just with a pre-chamber while 'direct' has none? P-C could be a regular thing with common rail injection but may be less important with computer control than with traditional pop-off injectors. Computers will compensate for timing by more than rpm, taking load into consideration. Cleaner burn and perhaps greater economy are part of that sophistication.
Now that is very revealing. Why would ANYONE right now want computer control. I know of a few owners with their tractors being down waiting on parts that have up to a 24 month delay on computer chip assemblies. Could you afford being without your machine for 24 months ??? All to save maybe an ounce or two of fuel per tank?
Back in 1998 there was a publication called, When The Chips Are Down, What Will You Do?. I forget the author/blogger in that era. The 14-chapters covered many instances of why computer controls can be overkill for convivence vs the necessity of doing the job. The book covered Y2K, UNIX, EMP and other ways the chips could go down and what to expect in a world without them. Oddly, in the Y2K chapter, life would just begin to level off in the year 2020 towards a recovery.
With the supply chain broken and with limited output, now is not the time to rely on chips. Dang tractors have been around longer than any other machine. In a SHTF event, tractors with no chips are a key source for all kinds of uses.
