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BMW E91 Engine Performance Packages

BMW E91 Engine Performance Packages Since 1993 Turner Motorsport has been at the forefront of performance tuning for BMWs. We show this best in our tuned Performance Packages, developed along stages for specific BMW models. Each staged Package is tuned in-house, bringing together expertise from our street tuning division, service shop, and race team. Nearly all of our Packages feature custom-tuned performance software from the best names in the business. The software is the best feature in our kits, maximizing power gains while doing nothing to affect engine reliability or driveability. In most cases, Stages are upgradeable - you can jump from one stage to another by purchasing the new parts and revised software (contact us directly about buying parts outside of the Stage). Or jump right into a higher stage by purchasing the complete kit. We'll work with you to select the appropriate parts and a matching software tune. Nearly all of our Packages have been tested and tuned on our in-house Dynapack Chassis Dyno. Our packages are designed for US-spec models only.
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E9X 328i/xi N51 07-12 Stage 1 Turner Motorsport Performance Package

2007-2012 E90/E92 328i SULEV Stage 1 Performance Package
Peak Power Gain: +19hp / +17ft-lbs
Rev limit: 7000
Octane: 91 or higher

Our Stage 1 kit featuring a cold-air intake kit and matching performance software. The aFe intake is a cone filter with a heat-blocking shield around it. The larger surface area of the filter, combined with the heat shield, allow more cool air to enter the engine - creating more power and torque, a richer engine sound, and better throttle response. The kit is supplied complete with heat shield, intake tube, sealing materials, hardware, and install instructions.

Our software fully maximizes the SULEV N51 engine in the 328i. Our software has been carefully developed on the dyno and the road to provide optimal power and torque gains at all RPM. We change the fuel, Valvetronic, and VANOS maps as well as revise the factory torque limiters. We have paid particular attention to increasing low and mid-range torque. 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. The throttle response is also improved (quicker) eliminating unwanted and dangerous flat spots in the pedal response.

There are two ways to install our software: mailing the ECU to us for a reflash or do-it-yourself install with our Turner Flash tool:

Mail-In Reflash - lower upfront cost but additional shipping charges. Minimum downtime of at least three days. We have a 24 hour turnaround on shipping the ECU back to you but factor in transit time. Expert installation of your software at our facility.
Turner Flash DIY tool - higher upfront cost but files are emailed back and forth. No downtime - you can still drive the car while we process your tune. Files are emailed back and forth - your stock file comes to us, a tuned file is returned to you. Easy install via Windows laptop. 

This package covers BMW's N51 SULEV model - Super Ultra Low Emissions Vehicle specification. The N51 engine was installed in the 328i model in certain parts of the country to help with emissions certification (California, the Northwest, and the Northeast). Most customers did not have choice in which engine was installed. We will verify that you get the correct software by checking the VIN at the time of your order.

E90/E92/E93 328i N51 Stage 1 Engine Upgrade includes:
aFe Cold Air Intake (filter, heat shield, intake tube)
Turner Motorsport Performance Software Flash

This item fits the following SULEV BMWs:
2007-2011 E90 BMW 328i 328xi 328i xDrive - Sedan
2007-2012 E92 BMW 328i 328xi 328i xDrive - Coupe
2007-2012 E93 BMW 328i - Convertible

Turner Motorsport
Part #: E9XN51-ST1
Price: $795.60 (USD) 
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E9X 328i/xi N52 07-12 Stage 1 Turner Motorsport Performance Package

2007-2011 E90/E92/E93 328i Stage 1 Performance Package
Peak Power Gain: +29hp / +29ft-lbs
Rev limit: 7000
Octane: 91 or higher

Our Stage 1 kit featuring a cold-air intake kit and matching performance software. The aFe intake is a cone filter with a heat-blocking shield around it. The larger surface area of the filter, combined with the heat shield, allow more cool air to enter the engine - creating more power and torque, a richer engine sound, and better throttle response. The kit is supplied complete with heat shield, intake tube, sealing materials, hardware, and install instructions.

Our flash software is tuned especially for a cold-air intake, maximizing the potential and providing smoother power delivery. We take the stock software and make adjustments for 91 octane (stock software is set around 87). We can get more power and torque, and increase fuel efficiency without affecting driveability or the life of the engine. The throttle response is also improved (quicker) eliminating unwanted and dangerous flat spots in the pedal response.

The 328i has BMW's 'MO - Medium Output' engine so it was de-tuned slightly from its true potential. What we have done is focus on improving the mid-range torque to get back some of that lost horsepower. Since this is where most drivers spend their time these gains would prove to be the most beneficial. Both of these items are packaged and work together. They provide a solid performance boost with a built-in package discount. For an excellent 'bang for the buck' upgrade, the software and intake are a great choice.

There are two ways to install our software: mailing the ECU to us for a reflash or do-it-yourself install with our Turner Flash tool:

Mail-In Reflash - lower upfront cost but additional shipping charges. Minimum downtime of at least three days. We have a 24 hour turnaround on shipping the ECU back to you but factor in transit time. Expert installation of your software at our facility.
Turner Flash DIY tool - higher upfront cost but files are emailed back and forth. No downtime - you can still drive the car while we process your tune. Files are emailed back and forth - your stock file comes to us, a tuned file is returned to you. Easy install via Windows laptop.

E9X 328i Stage 1 Engine Upgrade includes:
aFe Cold Air Intake (filter, heat shield, intake tube)
Turner Motorsport Performance Software Flash

This item fits the following BMWs:
2007-2011 E90 BMW 328i 328xi 328i xDrive - Sedan
2007-2011 E91 BMW 328i 328xi 328i xDrive - Wagon
2007-2012 E92 BMW 328i 328xi 328i xDrive - Coupe
2007-2012 E93 BMW 328i - Convertible

Turner Motorsport
Part #: E9XN52-ST1
Price: $795.60 (USD) 
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