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No better place then here, to throw this question on the chopping block. Does RENIX Engine Control Units (ECU) use Volatile Memory? Myself, I think YES. Following are three (3) reasons why: 1) RENIX ECU has "Hot at all times" (C201_B7) circuit. WHY? 2) If ECU doesn't know Closed Throttle (CT) percentage, what happens during the next START, when someone has their fat foot pushing down on the gas pedal. Will that become the new CT percentage? 3) Does Long Term Fuel Trim (LTFT) really just stand for Next Term Fuel Trim (NTFT)? I don't think so. If that was the case, you'd only need Short Term Fuel Trim (STFT). Now are all ECU's created equal (early ECU's vs later ECU's)? As new strategies and improvements came along during the RENIX years, they were incorporated into the ECU's. Could this be the reason why some say YES to "volatile memory", while others say NO? So this is a good time to sharpen up your butcher knife and start swinging away.