What about other engines? Does the compression ratio have to do anything with the compression ratio? I.e. I know my engine has a compression ration of 22.5:1. Does that mean that a good compression reading is 22.5 bar or 330.75 psi?

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1992 Mercedes 190D 2.5 turbo 5sp manual. EGT+boost gauges. Boost controller set to ~14.5 psi. 1 1/4 turns on full load adjustment. LPG injection. Next in the list is water injection.