|The Shark Injector is an amazing hand-held unit that plugs into your car's diagnostic port and re-flashes the computer with performance software. The software was developed by renowned BMW tuner Jim Conforti, who has nearly 20 years of BMW engine tuning experience. The Shark Injector is one of the safest and most cost-effective enhancements you can do - offering features and results that other upgrades simply cannot touch. The Shark Injector is also upgrade-able through its own USB port, allowing you to upgrade to different software as your needs and modifications change. This software is a major refinement of the stock software. It makes the car much easier to drive with less hesitation, more torque, and incredibly smooth operation. A lot of tuning has been done at the low RPM ranges to improve response. The car won't hesitate or lag, making the car easier to drive. And with the extra torque you can drive in a higher gear and not have to downshift as often. Theoretically this means better fuel mileage too! How does it work? The Shark Injector makes changes to the stock BMW software in the areas of fuel enrichment, transition fueling, camshaft timing, ignition timing, and VANOS control to take full advantage of 91+ octane fuel. BMW 'de-tuned' cars for the North American market in the event inferior fuel was used. We reverse those changes to gain more horsepower and torque. 91 or higher octane fuel must be used. How does it install? The Shark Injector plugs into your car's On Board Diagnostic (OBD) port, located under the dashboard in most cars. At the push of a button the Injector begins communicating with your car's computer. The Shark handles everything from that point on - reading and copying the stock software, re-loading its own performance version, and checking its work along the way. The whole operation is completed in under 20 minutes. A battery charger with a continuous 10-20amp charge is required. Benefits from the software include: more power and torque, particularly in the mid-range from 3500 RPM to redline. A quicker throttle response, giving the car a snappier feel. A safe increase in rev limit (great for staying in gear just a little longer). A smoother-running engine with fewer hesitations and dead spots. The top speed limiter is removed. A true DIY install with step-by-step instructions (no downtime while your computer is shipped somewhere else for the install). Upgrade and Restore features to install/uninstall on the same vehicle. Upgrade-able via USB connection with your PC - add a file to better suit your mods. Retains all of your diagnostic, service, maintenance systems and won't interfere with your normal maintenance routines. NOTE: The Shark Injector software REQUIRES the use of both a 15% reduction pulley on the supercharger and also 91 or 93 octane fuel depending on the package ordered. Failure to do may result in engine damage.