Simple bolt on tune to the N55 just connect 2 plugs. Had it on the car for 6 months.
Selling for $275
This plug and play tuner attaches to two easy to access sensors in the engine bay and works with your factory DME tuning to remap your boost, timing, and fueling for optimal performance and reduced turbo lag. Power gains on an otherwise stock car are up to 40hp and 50tq to the wheels. Installation & removal takes only minutes making this the perfect entry level N55 tuner.
Works with 2012+ F30 335 and 2014+ F32 F33 435 models
Really wakes up the car!