A recent issue with a blown blower gasket on my 8V92 proved the benefit of the VMSpc. I began to notice the digital oil pressure gauge on the VMSpc fluctuating more than normal. Then I watched as the pressure slowly decreased from 58-60 psi to 48-54 psi. I pulled onto shoulder of the interstate and found oil covering the side of my tow car and the right rear of the coach. Without the VMSpc, I might have done significant engine damage before the small analog dash gauge warned me I had a problem.
I have created wav files to give me verbal warnings of dropping oil pressure (50 and 40 psi) or if the temperature has reached certain milestones (190, 195, 198 and 203 degrees). These are informational but attract my eye to the gauge unless I know that the current driving conditions would result in the verbal reminder of the situation (i.e. coming to a stop will result in the lower oil pressure message activating as the oil pressure drops so fast that the higher message never gets a chance to play).
Those with more sophisticated electronic engine controls than the DDEC-2 may not need to quite as careful as the computer monitors and controls the engine more carefully.
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