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Best Tuners out there for our 5.3’s?


ObscureGlock

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Posted
22 hours ago, Yondu said:

Old Post, not sure if you remember but are these gains of .6 seconds and almost 4mph on 91 octane or E85?

All the bottom time slips were e85 tune only. Here is a video of my time slips with my mods over time.

 

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