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Message: [QUOTE="Mdub707, post: 577734, member: 107"] In my experience they are, but it's hard for me to say since I'm not sure which calibration is which, I don't exactly look to see either, I just happen to find that a lot of the older 03ish era 7 pin FICM's (with whatever programming is on them at the time) seem to work much better in my truck. Drivability seems great with the older ones, so much less effort to get the truck going. After driving with one of my favorite 7 pins, if I put the 4 pin on it's like I'm driving around dragging an anchor. I think this is why most of the tuners seem to say that you'll notice more of an increase with FICM tuning on the newer FICM's and the older one's are not as abrupt. Again though, to your point, you can put any calibration on any FICM, so it's kind of a moot point. [/QUOTE]

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