Turner Motorsport | Turner Performance Software for E9X 328i (SULEV)

Turner Performance Software for E9X 328i (SULEV)

Part #: AN51-328

MORE POWER, IMPROVED EFFICIENCY!!
Max HP gain = 15 hp
Max Trq gain = 12 ft-lbs
Rev Limit = 7000 RPM

Our software fully maximizes the N51 engine in the 328i while in SULEV spec (Super Ultra Low Emission Vehicle). The stock BMW software is hampered by settings for 87 octane fuel. By re-mapping the engine programming for 91 octane, we can make more power, torque, and improve fuel mileage - all without harm to the engine or affecting driveability. We have paid particular attention to increasing low and mid-range torque. The throttle response is also improved (quicker) eliminating unwanted and dangerous flat spots in the pedal response.

This software file is for the N51 engine SULEV model only. SULEV is a specification used in some parts of the US where emissions compliance is critical (mostly in California, the Northwest, and the Northeast). The computer and engine specs are different than the 'regular' 328i N52 engine.

This software is a reflash of your computer. The computer will need to be sent to Turner Motorsport for the installation. Click here for specific instructions on shipping the computer. If you are unsure of how to ship your computer, we can provide you with a shipping packet. Return shipping is by UPS Ground but Express shipping is available.

This item fits the following BMWs:
2007+ E90 BMW 328i 328xi 328i xDrive - with N51 SULEV engine - Sedan
2007+ E91 BMW 328i 328xi 328i xDrive - with N51 SULEV engine - Wagon
2007+ E92 BMW 328i 328xi 328i xDrive - with N51 SULEV engine - Coupe
2007+ E93 BMW 328i - with N51 SULEV engine - Convertible