C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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1981 ECM Power Prom

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Old Jul 11, 2010 | 09:51 AM
  #1  
Tommy Almond's Avatar
Tommy Almond
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From: Stanley NC
Default 1981 ECM Power Prom

Anyone here running the replaced aftermarket Power Prom in the ECM on a 1981 Vette instead of the factory prom? If so do you like it, any problems with it?
Does the aftermarket prom read all the sensors on the car that the factory prom reads?
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Old Jul 11, 2010 | 10:13 AM
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All that power prom does is allow a cooler t-stat and makes minor changes on the fuel table at WOT. IMHO its a waste of money and time. Better spent on a clean tune or other performance enhancing items: True Dual exhaust to start, then maybe a cam or head/cam upgrade. The ECM, Carb and Dizzy all work together and will support quite a few power upgrades.
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Old Jul 11, 2010 | 10:56 AM
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From: Cabot AR
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The aftermarket prom makes its biggest change in the dwell setting. Not a noticeable power difference.
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