Installing an Air/Water intercooler will be my next project. I finished installing a boost gauge and pyrometer today so I can get some baseline measurements before I put in the intercooler. I am using a generic ebay air/water unit that I got for $125, and a Honda Goldwing radiator to cool the water. After the intercooler is installed I plan to turn up the full load setting on the injection pump, and turn up the boost to get boost and EGT back to the levels I have before intercooling.

Pictures are the ebay intercooler and the radiator test fitting. Hood will close with a slight shave of the rear of the grill to clear the cap.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine