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Old 09-09-2012, 12:04 PM
Warlock III Warlock III is online now
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I don't see why it is always suggested to use a "matching computer".

I have interchanged the 5.2 and the 5.9 engines and/or computers repeatedly without incident. They use the same electronic components, firing order, etc...

I learned years ago even in my '90 Ramcharger (supposed to be 1 year only ECM lol) that even the F/S van 5.2 and 5.9 ECM's were interchangeable...without incident.

As long as you're sticking with the same trans I know from experience that it doesn't matter which ECM you use.

The 3.9's even interchange with the F/S van and Dakotas...without incident...because I've done that many times. Especially when there's not an exact match anywhere to be found.

Used parts suppliers use the information they have at hand and constantly tell customer's that it's a one year only exact interchange. However the software they use is entered by someone that sits behind a desk with probably very little to no hands on experience.

As an example try to find a fender for a '95 Ford van and they'll tell you that it only interchanges up to '97. Then I wish someone would tell me how it's an exact fit for an '02 because I've done that too.

How do I know it doesn't matter which ECM you use? Because I've done it at least 25-50 times.

Last edited by Warlock III; 09-09-2012 at 12:11 PM.
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