Stingergt19
Newish Member
- Joined
- Jun 25, 2021
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How accurate is the reading on the JB4 of the E85 mix? I fill up with about 6 gallons of E85 and the rest with 93 and I always get about the same readings. I have no other way to see the mixture other then the JB4. And my map 4 is supposed to be a E30 mix but I’m pretty sure it’s valet mode. Anyone else’s the same?

