I'm fully convinced that the JB4 runs better with E15-E20 than E30

Mine has gone down as well, but that is also because my normal driving is, in fact, more aggressive. It is just too fun when you tap on the accelerator and it takes off more than it did before.
 
Run whatever is working best for you but E30 is the sweet spot in my experience.
Run whatever is working best for you but E30 is the sweet spot in my experience.
I have an awd gt with aem cai’s, secondary cat and muffler deletes, Denso one step colder plugs, and these runs were with an e30 mix with 93octane . Does everything seem ok?
FYI this setup beat my buddy’s 2014 RS7 which is rated at 560hp stock...the next day he ordered the JB4 I cant wait to see how fast that car is going to be. I am very happy with the JB4 so far definitely worth it
 

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Runs look good to me!
 

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From interior to exterior to high performance - everything you need for your Stinger awaits you...
Interested in others opinions of this log as well.
 
So I don’t have a Stinger anymore. Traded it for a 2017 Camaro SS. But just wanted to recommend to anyone wanting to run more ethanol in their car.

You really should get the flex fuel kit which adds the sensor to your car. It really is the best way to go. The JB4 will be able to perfectly adjust for the ethanol content and your car will run better.

The reason I know is I just added a flex fuel sensor to my Camaro and it runs great on E85. But the only way it can do that is by giving the exact % of ethanol to the ECU. Without the sensor, it’s just a guess.
 
I'm curious I have the JB4 with the Fuel Flex it Sensor hooked up to it. I notice when I check my Ethanol Content on the FUEL IT APP it is very accurate and can give me the exact content of Ethanol at that time. But when I am on my JB4 App looking at the gauges specifically the E85 gauge it is show a much higher Ethanol number sometimes like 10-16 higher than my sensor app. What is the deal with this? Anyone else have see this?
 
I'm curious I have the JB4 with the Fuel Flex it Sensor hooked up to it. I notice when I check my Ethanol Content on the FUEL IT APP it is very accurate and can give me the exact content of Ethanol at that time. But when I am on my JB4 App looking at the gauges specifically the E85 gauge it is show a much higher Ethanol number sometimes like 10-16 higher than my sensor app. What is the deal with this? Anyone else have see this?
I have the sensor too. My Fuel it app says E28 and JB4 fluctuates 27-28. Something is off. Ask Terry.
 
I've been experimenting as well in SoCal E85 @ Shell. E20 seems to give me the best times. E30 the car is like 0.5 seconds slower across the board.
100 - 160kph : ~ 4.4 - 4.8 on E20 Map 3
100 - 160kph : ~ 5.0 - 5.3 on E30 Map 3
Same ambient conditions and I allow the IAT to cool down before each run on that same road.
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
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