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For owners of 2001-2016 Duramax's who are currently running EFILive tuning by Kory Willis, but have made a tire size change since the original file was built and need to have it updated, you've found the place! A simple upgrade to your file is all that will be necessary. Please give us the original tire size and the new tire size you are going to, as well as your complete VIN, and we will e-mail you an updated file.
Please note that you must currently be using tuning from Kory Willis of Power Performance Enterprise, Inc. in order to utilize this upgrade.
- ManufacturerPPEI | Power Performance Enterprises, Inc | EFILive by Kory Willis
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