Description
F3x 4-series non 435 TUNE
This is our tried and tested tune for an F3x 4-series with an N20/N26 engine. 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 recommendation.
KEY FEATURES:
⦁ Increased boost pressure
⦁ Top speed governor removed
⦁ Increased RPM rev limit
⦁ VANOS cam timing adjustment
⦁ Improved throttle response
⦁ Increased valvetronic valve lift
⦁ Ignition timing enhancements
⦁ Air/Fuel Ratio enhancements
OPTIONS:
⦁ Fuel - Selectable fuel octane rating (91, 93)
⦁ Burble - Emits flame and backfire when lifting off throttle. Only suggested for catless exhaust systems.
⦁ 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
⦁ Cold Start Delete - All N20/N26's have a cold start calibration to heat up the catalytic converters. If you're unhappy with the way your N20/N26 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:
40-60+ WHP
50-70+ FT/LBS TQ
For this tune you can mail in your DME for the initial flash or you can use the flash cable option if you have a windows computer/laptop for the initial flash. We supply instructions on where to download our software and how to use the flash cable. Each map change takes under 2 minutes. This will allow you to turn on and off burble, cold start, switch between stock and your performance tune, and/or any other options we offer for your DME.
