496 MAG ECM on a 496 MAG HO??
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496 MAG ECM on a 496 MAG HO??
Hey guys..
Can someone tell me if it safe to run a 496MAG ECM on a 496MAG HO, and what will happend if i do??
Regards. Jens.
Can someone tell me if it safe to run a 496MAG ECM on a 496MAG HO, and what will happend if i do??
Regards. Jens.
Last edited by jens henrik; 12-02-2016 at 03:36 AM.
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Not to sound like smart azz but their is reason for 2 different PCM's -- your engine will start and run but the fuel mapping among other things that are PCM controlled is a different calibration between the 2.
The 496 Mag vs HO = 50 hp and the 2 biggest MAIN difference between them is the cam and the calibration of the PCM
The 496 Mag vs HO = 50 hp and the 2 biggest MAIN difference between them is the cam and the calibration of the PCM
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I do know this 4 sure - years ago had 496 NON HO and wanted to see if it had a bad computer as the scan would not communicate and the engine would backfire while trying to start, It also seemed like it wanted to run for about 2 secs but completely quit each time the same way.
I had good used spare 496 HO PCM 555 ( switch out for testing ) - the engine started and ran (water hose tested) but as you throttled up and just below over rev limiting you could hear & tell that that fuel delivery was off. Too much fuel and trying to regulate it - the engine became blubbery and started missing. The correct PCM was ordered and bit of other things, it ran like it should of after that. The 496 HO PCM 555 for the Mag 496 never would of had work (UNTOUCHED or not recalled) I do know that 4 sure 100 %.
I had good used spare 496 HO PCM 555 ( switch out for testing ) - the engine started and ran (water hose tested) but as you throttled up and just below over rev limiting you could hear & tell that that fuel delivery was off. Too much fuel and trying to regulate it - the engine became blubbery and started missing. The correct PCM was ordered and bit of other things, it ran like it should of after that. The 496 HO PCM 555 for the Mag 496 never would of had work (UNTOUCHED or not recalled) I do know that 4 sure 100 %.