IECaliStang
New Member
- Joined
- Feb 17, 2022
- Threads
- 1
- Messages
- 1
- Reaction score
- 0
- Location
- California
- First Name
- Shawn
- Vehicle(s)
- 17 Mustang GT
- Thread starter
- #1
Long Story going back to Stock got a good deal and thinking of trading in the car. I was running a lund Flex tune. I had about 3 gallons of e85 left or at least the car said 30 miles to E, when I put 10 gallons of 91. I am right under a half a tank now few days later. Question is if I Put in another 5 gallons of 91 is it safe to flash it back to stock. Or do have to drive and empty out the tank before flashing it back to stock. Don't want to mess anything up.
17 mustang GT
17 mustang GT
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