I recently got a tune on a flasher that is gonna put my car up to 91 octane. The programming as it is right now is stock so I'm using regular. My tank is half-full. Do I need to empty it and put in 91 before I tune, or can I tuen it andrun on the 87octane for a few days?
Ha, yeah, I looked up some videos on youtube and I really don't feel like putting my car up on ramps after getting off work at 1am....I'll just have to take the scenic route home...
Just put the tune in and go fill up with 93 , then when that tank runs out fill with 91 and you will be fine
Tom
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