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  1. jimk

    Cummins 250 hp upgrade

    Some rambling thoughts- IMO piston coolers are more important if you run high EGT's and for long duration. My NHC250 with a N16 turbo makes 18 psi at 2100 (20 button and 225 psi fuel rail). I have no intercooler so my charge temp is higher than a nat aspired version (maybe 220*F max). I have...
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