Turner Motorsport | Turner Performance Software for E9X 325i

Turner Performance Software for E9X 325i

Part #: TN52-ST1

Max HP gain = 19 hp
Max Trq gain = 15 ft-lbs
Rev Limit = 7000 RPM

The 2006 325i came with the same N52 3.0-liter engine as the more 330i. But BMW made several changes to de-tune the 325i (to justify the additional cost of the 330i). Thanks to tuners like us it's now very easy to unlock the potential of the 325i engine to meet the 330's output. Our Stage 1 software is a simple re-flash of the stock software, yielding a gain of 19hp and 15ft-lbs of torque! The gains made by this software between 3500 and 5500 are simply a night and day change!

Our software fully maximizes the N52 engine in 325i spec. 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.

To get the full 330 output, you will need to change the intake manifold and upgrade to Stage 2 software (available soon). We can also tune for a cold-air intake, exhaust, and headers/sport cats (another big power source).

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.