ESS Tuning - 20i spec E-Tronic Tuner - BMW N20
ESS E-tronic provides safe, simple to add power to the already potent 120i/220i/320i/420i/520i/X3 2.0i and Z4 2.0i. Unlike other external controller products on the market E-tronic is a sophisticated multi channel controller that has RPM intergration. This provides for full control of boost at all RPM ranges and proper calibrations without the need to splice into any factory wiring. OEM grade hardware is used to provide high quality, safe, reliable power with excellent driveablility. Pre-set calibrations provide for a very simple installation without the need for setup or adjustments once installed. E-Tronic can be disabled or removed at anytime allowing customers to keep factory warranty.