[Ke90]

If you plan to run any E85 mixtures do you have to purchase the Ethanol Sensor kit from Fuel-it for the JB4?

SHOP BY VEHICLE TYPE - BMW - 2-Series - 240i B58 (F2X) - FLEX FUEL KITS - FUEL-IT!

Does the JB4 require it for tuning/learning or is it just strictly to show what the E85 mixture you currently have? Ex: E60,E40 etc…

I know I will need a tune designed for Ethanol mixture and once I get that, does the JB4 still need the sensor kit too?

Thanks for help.

[Payam @ BMS]

Not needed to run the sensor kit.

You can run mild blends up to e30 with JB4.

[Ke90]

Originally Posted by Payam @ BMS

Not needed to run the sensor kit.

You can run mild blends up to e30 with JB4.

Thank you.

[Ke90]

Originally Posted by Payam @ BMS

Not needed to run the sensor kit.

You can run mild blends up to e30 with JB4.

If I were to run higher blends would it need it? Or can the JB4 run full E85 as long as the BEF is correctly tuned for it?

I plan on upgraded HPFP to start running E85, I just was not sure if then JB4 application needed anything else. (Ex: EWG cables or ethanol analyzer kit)

My understanding is as long as the BEF I am running is for the ethanol mixture and I am accurate when fueling the tank; there is no need to spend another $450 for an ethanol analyzer since the JB4 will still run correctly without it. (As long as correct BEF is loaded)

Thanks again for help.

[Payam @ BMS]

I would get it for higher blends to make sure you're getting the E content you want for the higher boost you'll probably be pushing with it.

You will need BEF with full e85 and HPFP IIRC.