ESS N55 F series E-Flash Stage 1 ECU software is a result of extensive testing and exact calibration of ECU parameters to allow significant performance gains on a stock or lightly modified car (intake/exhaust/IC). The Stage 1 software is developed and tested in extreme heat as well as extreme cold temperatures. Typical gains are in the 40-45whp range.
The E-Flash N55 software is a full OBD2 solution that does not require sending in the ECU or opening the ECU in any way.
All emissions control systems remain active with this software.
Part number: 101-103
Top Speed Governor: Removed
RPM Limit: 7100RPM
Fuel requirement: 91-93US/ 98Euro
Horsepower 2012: 360 DIN (Stock 306/320)
Horsepower 2013+: 400 DIN (Stock 306/320)
Torque: 500NM (Stock 400NM)
*Correction factor for drivetrain loss is 15% above RWHP as seen in dynograph (RWHP/0.85) Power rating is dependent on fuel quality.
Application intended for: All 135i,M135i,M235i,335i,435i,535i,640i,X3 3.5i, X5 3.5i N55 from 2012 2013 2014 2015 2016
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I have a 2015 X5 i35 sDrive and wanted a little more out of it since it was stock. I ordered this Stage 1 ECU flash and it is a noticeable difference in performance. I have since add a Burger Motorsports CAI and throttle response is instant now. Customer service is top notch as well.