Re-Flash or save $ and SCT w/ custom - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

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Old 09-22-2009, 11:54 AM
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Re-Flash or save $ and SCT w/ custom

Dealer says I need an update, truck has the original 2004 programming and gets great milage in the 20's. I understand that a re-flash will kill my mpg.

I'm having surging and rough idle which is why it is at the dealer in the first place.

I'm planning to put a tune on it anyway so I'm wondering if I should just save the re-flash money and get my livewire right now.

What are the downfalls of not doing the factory re-flash prior to custom tuning? Will my symptoms persist even with the tunes without the re-flash?

It's not that much to flash it but I don't want it to be a waste of $ AND kill my milage if the tunes will fix it anyway.
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