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Discussion Starter #1
Hi guys,

I am in the UK and have a 2011 Mustang GT. I've just installed a late 2014 crate engine (guessing late 14 by the different dipstick) into it as the last one died. However, we cant get the crank sensors to relearn and we've tried everything, revving it higher, taking it for a drive, nothing has worked.

All we can think is that the car has been custom tuned without me knowing (it has exhaust and a huge JLT intake). Because when we stuck the OEM intake in it ran terribly so we think its tuned and did not get told by the previous owner when I bought it. We also think this is why the crank is not relearning, unless someone else knows another reason why it might not be?

I've ordered an SCT X4 to retune the ECU however, when we plug it in, will it take the current ECU parameters as stock? So it will think my tuned ECU is a stock ECU and use those parameters as stock? Obviously if that's the case then I have a problem as I want to get the ECU to stock and relearn the crank and then tune it again to a tune that I put on her.

If the X4 can't get the ECU to a stock state, how can I get it done? I don't really want to buy a new ECU after forking out thousands already.

Thanks in advance.
 

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Even most of the new ecu's don't come with the programming....that is a dealer installed item.
 

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Are you using the old ECU from the car, with the new crate engine?


If so, there could be all kinds of mismatches there, I thought the ECU had to be matched and programmed for the engine. There could be some significant changes from 2011 to 2014.
 

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Discussion Starter #4
Are you using the old ECU from the car, with the new crate engine?


If so, there could be all kinds of mismatches there, I thought the ECU had to be matched and programmed for the engine. There could be some significant changes from 2011 to 2014.
Yeah using the same controls pack and ECU that it is already on my car as online it says the engine is a direct replacement for 2011-2014 mustangs, doesn't say anything about having to buy a new controls pack along with the engine unless doing a restrooms install.

Do I really need to by a new ECU as well? Really the last thing I need
 

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I really don't know and don't want to confuse the issue or mislead you. But I thought the ECU and engine kinda went together . . .
Hopefully someone who knows will chime in.
 

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I really don't know and don't want to confuse the issue or mislead you. But I thought the ECU and engine kinda went together . . .
Hopefully someone who knows will chime in.
Yeah I don't know to be honest I always thought the ECU could be used on a 11-14 and only have to buy a new controls pack to run the new 2015 engine. That's what's advertised anyway.
 

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You might want to call Bama tunes @ American Muscle and see if they could email you a factory tune. I can't believe they wouldn't have a copy of it.


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