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Discussion Starter · #1 ·
I have a custom tuned ECM and have changed tire size. Can the speedo be adjusted at a local shop (not dealer) without disturbing the tune, or do I have to send the ECM back to the tuner to do it with EFILive?? :drink
 

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Ya if you ever took it to the dealer I would make sure they dont TOUCH the ECM or you could loose the tune in your ECM.

The easiast way is to send yours back or have them send you one with the correct tire size ans send it back so your truck isnt down. If theyll go for it :rolleyes:



 

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Discussion Starter · #4 ·
Somebody today mentioned using a "speed buffer" which would avoid having to mess with the ECM. Anyone know anything about this? Buying an EFI Live would have been easier, lol
 
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