E39 M5 Tune
This is our tried and tested tune for an E39 M5. These tunes were designed on a Dynojet dyno and tested in the real world! All tune packages come with an OBD to USB cable and software to read and write your DME/ECU. A Windows computer is required to utilize the RK-Tunes flash software. Check FAQ section for windows device recommendations.
⦁ Top speed governor removed
⦁ Increased RPM rev limit
⦁ VANOS cam timing adjustment
⦁ Improved throttle response
⦁ Ignition timing enhancements
⦁ Air/Fuel Ratio enhancements
⦁ Fuel - Selectable fuel octane rating (91, 93)
⦁ Rear O2 Sensor Delete - If you are running aftermarket headers please select O2 Sensor delete. We will remove all coding associated with rear O2 sensors
⦁ SAP (Secondary Air Pump) Delete - If you have deleted your Secondary Air Pump, please select this option and we will remove the coding from the DME/ECU to avoid a CEL.
⦁ Cold Start Delete - All E39 M5's have a cold start calibration to heat up the catalytic converters. If you're unhappy with the way your M5 idles/runs while cold, select this option and we will adjust the cold start in your tune. Highly advised if you are running a catless exhaust system.
PERFORMANCE SPECS BASED ON MODIFICATIONS:
5-10+ FT/LBS TQ
In the modification box, please specify all current vehicle modifications and desired options.