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ORIGINAL: dermad23
I have heard from other websites/forums that a tune could possibly void a warranty. I was wondering if this is true or not?
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Technically that's true, but it varies from dealer to dealer as to how stringent it's applied.
Before taking it for service, most folks with custom tunes will reset theirs back to stock and disconnect the battery for ~15 minutes, which clears the nvram (memory).
The only thing the dealer tech can see is that the computer was reset (not sure about '07s but there is no comprehensive data logging to indicate that specific parameters have been altered).
If the dealer tech asks why power was disconnected the usual reply is that you were getting a gas cap open error (fairly common issue on 05's, 06's) and reset to clear it.