E85 chip - Bmw E46 / E39 - M52TUB20 / M52TUB25 / M52TUB28 MS42 (98 - 01)

 E85 Ethanol tuning chip optimized for E85 fuel (~104 octane).

• To be albe to run on E85 you need 38% higher flowrate than for Petrol. We offer optimization of both fuelmap mixture as well as advanced ignition for the E85 fuel.
• Notice - You will need bigger injectors to run on E85. We recommend you to use injectors which is sized as close as possible to stock * 1,38. 
• The cold start maps is also optimized for E85 Ethanol fuel, so that it starts like normal even when engine is cold. There could be harder to start the engine in very cold climate (-10 C or cooler)
• An optimized chip makes the torque rise earlier in rpm and the engine becomes more rapid. This is why you cant only focus on peak power output, cause the most important benefits is better drivability and a more rapid engine.
• E85 Ethanol fuel is more aggressive to fuel pipelines and fuel pump so we recommend you to change them if they are'nt in good condition.
• Ex ECU nr: 5WK9037 , 5WK90329 etc
• ECU needs to be sent to us for reflashing. No soldering is needed.
• Notice - To be able to order, you have to fill in the form below and click [SAVE]

For queries please email us for more information at info@fekzen.se

Reference projects:

Z3 2.8 MS42 on E85 with M54B30 intake.
https://www.instagram.com/p/Bg9XC-pDUOY/

BMW CUP Racecar with M54B30 running on E85.
https://www.instagram.com/p/BTjDtErD230/

BMW E46 320i with M52TUB28 engine and M54B30 intake on E85.
https://www.instagram.com/p/Bqh8c6qlO3z/