Free Shipping on orders $99 and up! Some exclusions apply. Contiguous US only.

E46 323/328 Shark Injector Performance Software

Mfg Part #
Turner Part #
In Stock
Free Shipping Free Shipping
Does this fit my vehicle?
For accurate results, specify your model below.

Product Details

  • Unlock torque and horsepower
  • Smoother engine with less hesitation
  • Improved throttle response
  • Rev limit increased to 7000
  • Top speed limiter removed
  • Installs in minutes!

Performance software is a must-have upgrade on your BMW and you won't find an easier and better software solution than the Shark Injector. Developed by BMW tuning expert Jim Conforti, this device plugs into the car's diagnostic port and flashes new performance files into your car's engine computer (ECU). There's no removal of the ECU and shipping, no cables, no laptop required - only a battery charger! Installation takes just a few minutes and your engine will perform like never before!

The M52TU performance software was developed on the dyno to create maximum power and torque using premium 91+ octane fuel while maintaining BMW reliability and smoothness. The software makes changes to the ECU's maps and algorithms for fuel injection, ignition timing, VANOS and camshaft movement, and transitional fueling. We modify the maps for part throttle and full throttle so you get better response and more torque at all RPM. We also raise the rev limit to 7,000 and remove the top speed limiter. By fine tuning these maps we've been able to improve the M52TU engine beyond what BMW did by making more power and torque and a smoother-running engine.

The Shark Injector plugs into the diagnostic port inside the E46 cabin. With the battery charger supplying power, press the Upgrade button and within minutes the ECU is reflashed with the new performance tune. No other software product on the market comes close to how easy it is to install. You can use the Restore button to re-install the stock BMW software at any time. Detailed instructions are included. Other tuners require you to remove the ECU and ship it to them or use a laptop to read and write a new file. The Shark Injector is ready to install right out of the box! A planned future upgrade will allow you to use the USB port to load different performance files.

1999-2000 E46 323i (M52TU engine) Performance Software Peak Gains

E46 323 dyno chart
HP Gain+ 14 @ 6000 RPM
Torque Gain+ 6 @ 5000 RPM
New Rev Limit7000 RPM

1999-2000 E46 328i (M52TU engine) Performance Software Peak Gains

E46 328i dyno chart
HP Gain+ 15 @ 6200 RPM
Torque Gain+ 12 @ 3500 RPM
New Rev Limit7000 RPM

Read what others are saying!
(click to expand)
DBALZE, 323Ci: "The shark injector is awesome! After I put it in, I could definitely feel the quicker throttle response and more power throughout the acceleration curve. Definitely worth the money to me!"
chrisct, 323Ci: "I installed an XXX short ram cold air intake and the shark injector on my 323Ci and I couldn't be happier. For me the biggest advantage was smoothing out the throttle response, but it definitely feels snappier."
hqbmw, 328Ci: "This Shark really woke up my 328Ci. Cost per performance increase is as good as it gets! Also getting 10 to 15% better fuel economy in "normal" driving."
huyner328, 328Ci: "First change I would like to mention is the increased throttle response, as soon as I shifted and floored it, the car would pull. From 3400rpms to about 5000rpms I think was the sweet spot that gave me a nice little grin on my face. Next I tested the Redline of my car, yup another grin on my face. I definitely noticed that the car moved a little bit quicker with not as much gas consumption on the MPG Gauge. Overall, awesome mod."
Shark Injector Installation Instructions
(click to expand)
Shark Injector installation instructions
A capable battery charger is required for the installation. The charger provides backup power supply to the regular car battery during installation. It must be capable of holding a continuous 10amp charge for the full installation (15-20 minutes).
The minimum octane fuel for this software is 91.
Shark Injector FAQ
(click to expand)

This item fits the following BMWs:
1999-2000 E46 BMW 323i 323ci 328i 328ci

Loading Kit Configurator

Current Price

Kit Configurator

Current Price:

Add the recommended battery charger?

E46 323/328 Performance Software:

This Part Fits the Following BMWs

Make Model Submodel Engine
BMW E46 323Ci M52 2.5L
BMW E46 323i M52 2.5L
BMW E46 328Ci M52 2.8L
BMW E46 328i M52 2.8L
*The above product applications have been written by Turner Motorsport. All warranties, product application, fitment, and performance are the responsibility of Turner Motorsport. For additional information see the terms of use.
  • 22 years of BMW Tuning.
  • Award winning service.
  • 10,000's of parts in stock.
  • Quality BMW Parts only.
  • Hassle-free returns.

  • Find us on Facebook