Here is a chart I put together after driving on “relatively“ flat ground in 5th gear with a R151 Manual Transmission. Hopefully it will help others gauge their performance. That said, Boost and EGT will vary with the slightest variance in slope. This chart was based on “eyeballing” flat ground. Water Temps were always between 81 - 86 Celsius. OATs were between 20 - 25 Celsius. I have a FMIC, which will drop EGTs slightly on flat ground, but otherwise should be valid for mostly stock LJ70s.
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