This is our tried and tested tune for an E9x 335 with an N55. These tunes were designed on a Dynojet dyno and tested in the real world! A Windows computer is required to utilize the RK-Tunes flash software. For an additional $300, we can include a Windows operating tablet and OBD2 to USB flash cable that can be used in place of a Windows operating computer.
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 N55's have a cold start calibration to heat up the catalytic converters. If you're unhappy with the way your N55 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: 60-100+ WHP 70+ FT/LBS TQ
This tune requires you to mail in your DME for the initial flash. If you plan to get our flash cable in the future we can do what is called a bootloader change which is a one-time software change that allows for OBD2 port tune uploads. Please select the bootloader change option if you want to get our flash tablet set up now or in the future. Our Tablet option is a tablet, software, and OBD to USB cable combination that allows for you to switch between tunes. 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. Please see our DME Tuning info tab at the top of this page for more information. In the modification box, please specify all current vehicle modifications and desired options.
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