- Power Gain: 40hp
- Torque Gain: 67ft-lbs
The Speed-Buster Power Module is a simple plug and play 135i/335i/535i N55 power upgrade that delivers big power gains with no downside. The installation is simple - just 3 sensors - making it the easiest power gain you'll ever do. By sending modified signals back to the engine computer, the Speed-Buster tricks the computer into safely raising the boost. And with careful programming of operational tables, the Power Module doesn't trigger torque limiters, monitors, or limp mode, which means safe power that won't kill your engine - or warranty!
Inside the Speed-Buster module is a sophisticated programming module, tuned specifically for the N55 engine on Speed-Buster's MAHA dyno. All development, tuning, and production are done in-house at their German facility. Speed-Buster's programming works seamlessly with the factory ECU to give an impressive increase in power with factory-levels of drivability and smoothness. All factory overboost protections remain in place and the system can be uninstalled at any time. A bypass plug is also included that allows stock operation without component removal if you want your BMW to appear stock. The Power Module works independently from the factory BMW ECU so it's unaffected by software updates and revisions, and all OBD diagnostics and service functions are untouched.
Installation is fast and easy - simply unplug the factory connectors for the designated sensors on the N55, plug into the Speed-Buster harness, and plug the Speed-Buster connector into the sensors. The harness uses factory-type connectors for a positive and weatherproof connection and an OEM appearance.
Speed-Buster is
the premium German tuning module brand. All harnesses, modules, and circuit boards are premium quality, made in-house in the Speed-Buster facility in Germany. No need to pay hundreds of dollars more to buy this component elsewhere in a different box, or risk getting a lesser-quality part! We have researched extensively, and proudly sell the premium Speed-Buster product line.
Fitment note: this harness works on early models of the N55 engine. The TMAP sensors on the manifold and intake chargepipe changed connectors midway through the model cycle. This harness is commonly referred to as a Type A harness and has a smooth housing. We have tried to narrow down the cutoff dates in our applications below but the possibility exists there could be anomalies. We will work with you to get you the correct harness kit for your model!
Note for M Performance Power Kit (MPP): Speed Buster has finely-tuned software files for each car and this kit should not be used on cars that have the factory M Performance power upgrade. If you have the factory MPP contact us for alternatives.
Notice of Emissions Non-Compliance. This software was developed and tuned on vehicles that retained all emissions controls. It is intended for vehicles with stock and fully functional emissions equipment. However, it has not been submitted nor tested for approval in California. Therefore, it is not legal for installation or use in California on any pollution controlled motor vehicle. Not legal for installation or use on any pollution controlled motor vehicle in any state, province, or jurisdiction governed by, or which has adopted, CARB or EPA regulations. Some suppliers will not ship to certain states, requiring extra delivery time. We will advise you of any delays.
BMW Fitments:1 SeriesE82 / E88 (11-13) > 135i
3 SeriesE90 / E91 / E92 / E93 (11-13) > 335i
E90 / E91 / E92 / E93 (11-13) > 335xi
5 SeriesF10 (2011) > 535i
F10 (2011) > 535xi
X SeriesF25 X3 (2010) > X3 xDrive35i
X SeriesE70 X5 (2011) > X5 xDrive35i
X SeriesE71 X6 (2011) > X6 xDrive35i
