do you have issues with convergence with the JB4 and Fuel it app? It seems that the Fuel-it app is more accurate than what is shown on JB4. JB4 seems to always under represent the amount compared to the Fuel-it app. Both work off the same sensor so it is a bit of a head scratcher. I notice that the JB4 app shows more accurate numbers after you drive it 30 miles or so. But it takes a while. On my current tank I’m 20-30 miles in after refuel and Fuel-it app shows E31 and JB4 app is showing E24. What is your take on this anomaly?
I have the WMI and Fuel it so I had to turn it on a special way. I would reach out to Terry and make sure whatever bit needs to be turned on is on. My JB4 and the Fuel-it have always matched to my recollection. I will double check it later today to confirm, but there has never been a discrepancy between the two.
I have the WMI and Fuel it so I had to turn it on a special way. I would reach out to Terry and make sure whatever bit needs to be turned on is on. My JB4 and the Fuel-it have always matched to my recollection. I will double check it later today to confirm, but there has never been a discrepancy between the two.
It’s usually when I first fuel up. It’s gets closer over time. I talked to Terry and probably will send logs. I think it is more of a software issue than a hardware issue. Both read the same sensor. The fact that the JB4 is adjusting tells me the hardware is installed correctly. It’s just a a wire coming into the 16 pin spot on the JB4.
There is only one sensor. The JB4 is reading the E85 off the Fuel-IT flex fuel sensor as a voltage. So if the readings are not lining up could be a difference of where the grounds are placed or could just be a scaling variation.
There is only one sensor. The JB4 is reading the E85 off the Fuel-IT flex fuel sensor as a voltage. So if the readings are not lining up could be a difference of where the grounds are placed or could just be a scaling variation.
I placed the ground in the same location as it was shown in the installation. What would I need to do for the scaling? Is that an adjustment I can make somewhere?
I placed the ground in the same location as it was shown in the installation. What would I need to do for the scaling? Is that an adjustment I can make somewhere?
Initially after filling up it was showing a difference of 11 (E31 on Fuel it and 20 on Fuel-It. After 20 miles or so it shows E31 on Fuel it and 24 on JB4.
I placed the ground in the same location as it was shown in the installation. What would I need to do for the scaling? Is that an adjustment I can make somewhere?
Can you double check voltage / scaling for AFR as well? Torque obd shows 12.0- 12.2 and jb4 shows 12.4 to 12.7 for the same gears and rpm ranges. The tune is set closer to 12 so i don't think the obd is off.
do you have issues with convergence with the JB4 and Fuel it app? It seems that the Fuel-it app is more accurate than what is shown on JB4. JB4 seems to always under represent the amount compared to the Fuel-it app. Both work off the same sensor so it is a bit of a head scratcher. I notice that the JB4 app shows more accurate numbers after you drive it 30 miles or so. But it takes a while. On my current tank I’m 20-30 miles in after refuel and Fuel-it app shows E31 and JB4 app is showing E24. What is your take on this anomaly?
I’d also double check with Terry to ensure you have the correct Flex Input values enabled for your configuration. For example, my setup with WMI and Flex-Fuel sensor would be different than someone with just the Flex-Fuel sensor.
To answer your question, my values in the JB4 app were also off when compared to the Fuel-It app when I first installed the sensor. I contacted Terry and after toggling the correct flex input, the values matched exactly. So it doesn’t hurt to double check.
I’d also double check with Terry to ensure you have the correct Flex Input values enabled for your configuration. For example, my setup with WMI and Flex-Fuel sensor would be different than someone with just the Flex-Fuel sensor.
To answer your yesterday, my values in the JB4 app were also off when compared to the Fuel-It app when I first installed the sensor. I contacted Terry and after toggling the correct flex input, the values matched exactly. So it doesn’t hurt to double check.
I’d also double check with Terry to ensure you have the correct Flex Input values enabled for your configuration. For example, my setup with WMI and Flex-Fuel sensor would be different than someone with just the Flex-Fuel sensor.
To answer your question, my values in the JB4 app were also off when compared to the Fuel-It app when I first installed the sensor. I contacted Terry and after toggling the correct flex input, the values matched exactly. So it doesn’t hurt to double check.
Everyone, my Fuel-It/JB4 convergence problem fixed, thanks to Terry! I didn’t have the pin all the way in the 16 slot. Once, I plugged it in all the way and restarted, voltage was established and problem solved! I was the error, not JB4. Anyway lesson learned. Thanks again for your patience Terry!
Also due to setting previously you were comparing the internal virtual sensor reading with the hard wire sensor. In that context it wasn't too far off!
Everyone, my Fuel-It/JB4 convergence problem fixed, thanks to Terry! I didn’t have the pin all the way in the 16 slot. Once, I plugged it in all the way and restarted, voltage was established and problem solved! I was the error, not JB4. Anyway lesson learned. Thanks again for your patience Terry!
Also due to setting previously you were comparing the internal virtual sensor reading with the hard wire sensor. In that context it wasn't too far off!
Anyone have any numbers or experience with the JB4 adjusting automatically based on ethanol %? Does it only occur in certain maps or is it in all of them? Is there a limit to how much it can adjust for?
Anyone have any numbers or experience with the JB4 adjusting automatically based on ethanol %? Does it only occur in certain maps or is it in all of them? Is there a limit to how much it can adjust for?
Anyone have any numbers or experience with the JB4 adjusting automatically based on ethanol %? Does it only occur in certain maps or is it in all of them? Is there a limit to how much it can adjust for?
Sorry to bump an old thread but for people with the Fuel-it sensor, is the sensor on the low pressure fuel side or the high pressure side? Are there any clearer pictures of where the fuel line you are using is? The two pictures on the install are not super clear. Thanks!
