FCIM and Custon Tunes on SCT. - Ford Powerstroke Diesel Forum
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Old 10-05-2011, 09:10 PM
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FCIM and Custon Tunes on SCT.

Say if I got a 58v FCIM with a mild flash tune. Would I have to revert my truck to stock before I replaced my FCIM? Or could I just throw it on and say if I ever needed to revert to stock with my sct it would work with the fcim.
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Old 10-05-2011, 09:56 PM
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Quote:
Originally Posted by 20046.0 View Post
Say if I got a 58v FCIM with a mild flash tune. Would I have to revert my truck to stock before I replaced my FCIM? Or could I just throw it on and say if I ever needed to revert to stock with my sct it would work with the fcim.
edit: also guys is there any information where I can learn some fundamentals of injectors and how the cc and nozzle sizes affect horsepower? My current goal is to make around 600rwp I tow a 7000lb trailer once a month maybe 100kms at a time. . once again off topic question here.
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Old 10-06-2011, 01:44 AM
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Quote:
Originally Posted by 20046.0 View Post
Say if I got a 58v FCIM with a mild flash tune. Would I have to revert my truck to stock before I replaced my FCIM? Or could I just throw it on and say if I ever needed to revert to stock with my sct it would work with the fcim.
No need to revert back to stock when swapping FICM's. The only thing you may have is, you might get a code for the FICM not being sync to PCM, not an issue.
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Old 10-06-2011, 02:12 AM
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Originally Posted by Lilpooh View Post
No need to revert back to stock when swapping FICM's. The only thing you may have is, you might get a code for the FICM not being sync to PCM, not an issue.
Would this code just be a diganostic error? It wouldn't affect the truck itself?
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Old 10-06-2011, 02:53 AM
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Based on what I've read on PHP forum, the U0306 code just means the PCM programming don't match the FICM programming. Its a soft code, with no side effects.

The SCT only reprograms the PCM/TCM.

You can fine alot of info on the PHP forum.
http://forum.gopowerhungry.com/
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