JB4 E85 Readings

Stingergt19

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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?
 

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You need the Flex Fuel Kit for the reading to be accurate.
 
You need the Flex Fuel Kit for the reading to be accurate.
I know the flex kit is accurate. I was just wondering how accurate the JB4 was and how it even can read the mixture.
 
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I know the flex kit is accurate. I was just wondering how accurate the JB4 was and how it even can read the mixture.
It’s not accurate. Sounds like you are using to much E in your mix. You’re likely over E30 and your HPFP can’t keep up. That’s why it feels like valet. Got any logs?
 
It’s not accurate. Sounds like you are using to much E in your mix. You’re likely over E30 and your HPFP can’t keep up. That’s why it feels like valet. Got any logs?
Map 4 has always been like valet mode not very much boost at all. That’s why I keep it on map 3. No logs the car runs perfect in maps 3 and below. Even runs good on map 5 till it says I can’t run that map anymore!
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
KABOOM
 
Map 4 has always been like valet mode not very much boost at all. That’s why I keep it on map 3. No logs the car runs perfect in maps 3 and below. Even runs good on map 5 till it says I can’t run that map anymore!
Sounds like ya got er all figured out. Good luck.
 
you should try 4 gal of ethanol my guy and the rest 93. 93 is good for map two. map three will work wonders if you add in four gallons of ethanol! post logs in the forum people can def give them a look here.
 
you should try 4 gal of ethanol my guy and the rest 93. 93 is good for map two. map three will work wonders if you add in four gallons of ethanol! post logs in the forum people can def give them a look here.
I will do that on the next tank fill!
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
Kia Stinger
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