The Stinger 4 offers the same state of the art in Engine Management Computers. But is designed more for the motor sport hobbyist. It is very powerful and feature-rich when compared to other ECUs in its class. And like all EMS products it is fully upgradeable as new software features are released. Advanced Design One ECU fits all. Just like the Motorsport Series. There is no need to send your ECU back for re-programming when you want to fit it to a different engine. The same ECU can be re-programmed by the user to suit almost any engine. The Stinger uses the same advanced technology as the Motorsport Series ECUs. It is designed for situations where the advanced sophistication of the Motorsport Series are not required. EMS has lead the way in user-friendly ECU management software. Our Windows software is developed by professional software developers who have experience in engine tuning and advanced Windows programming. This becomes evident when you tune any of our systems. View Specification sheet (Acrobat format) Key Features 4 User Definable outputs can programmed as PWM or digital. These can be used for controlling thermo fans, Idle controls, variable cams, fuel pumps, Boost Control, Variable water spray, etc. Connects to most sensors. This means that you can use your existing sensors with the Stinger. Adjustable RPM and load points. The Stinger 4 offers 40 RPM points with a 1 RPM resolution and 21 load points with a 0.1 percent resolution. This provides a tuning grid of 840 points. Of course you don't have to use this many. You can define any number of RPM and Load positions you require to tune with. This provides non compromised tuning ability. The advanced micro code will perform a 3 dimensional interpolation between all load points. Advanced trigger circuitry. Automatically filters trigger inputs for noise ensuring that the trigger signal is always 100% accurate. This combined with the advanced auto signal tracking and true zero crossing detection with magnetic sensors always provides accurate timing at all engine speeds. Advanced Micro Code EMS have put great effort in programming their micro code to ensure it stays in exact synchronization with the engine. This minimizes the risk of misfired and lean strokes therefore increasing engine life and providing more power. The system also performs a 3 dimensional interpolation between load points to ensure that your engine is getting what you tuned it to receive ECU Specifications Cylinders: 1,2,3,4,5,6,8,10,12,16 Engine Types: 2 stroke, 4 stroke and Rotary 1 to 4. Suits up to 99% of automotive EFI applications and sensors. ECU WIRING LOOM SOFTWARE INCLUDED + base maps & detailed help files. DATA CABLE. View Specification sheet (Acrobat format) Contact us with any questions regarding installation, tuning & support.