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Discussion Starter · #1 ·
Got a Diablo tuner. Changed the MDS to run on all 8 cylinders. Says the 8th is misfiring. I still pay for 100k warranty. If I switch back to stock tune and take it in would the dealership be able to tell if it's be tuned. I don't want to void my warranty.
 

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A good scan tool can pick things up I usually recommend those tuners after the warranty, since dealers will find any reason to deny warranty work if they can. Good luck if you go to the dealership I hope they help you
 
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