iWARNING: Products on this page can expose you to a chemical, which is known to the St ate of California to cause cancer or reproductive harm. **For more information go to www.P65Warnings.ca.gov**64BACKGROUND: Fuel injection has always been costly for Corvairs, mostly because of the welding required on the port injection and the manufacture/use of low production parts. The throttle body was chosen for its dependability and simplicity; it also uses mostly GM main-line production parts for cost and reliability. The dual throttle body has been used before, but was fragmented and used a costly computer to run it. This system uses a Water Temp Equivalent (WTE) method for the ECM to control and trim the engine's operation. We hope you find that this is one of the most well thought out, economical and dependable kits ever produced for the Corvair while providing years of trouble-free service. This EFI system is a DIY system with many pre-made/adapted parts to aid you in the successful installation of your system, but relies on your skill & knowledge of Corvairs and EFI. If you doubt your abilities, hire an installer or enlist a friend/club member to help you with the install.THEORY: Carbs and points that control the Corvair and all motors of that era are a compromise. The carbs give the best fuel mixture only at certain times due to the design. Distributors cannot compensate for temperature and use flying weights to control the timing. Good, but again, a compromise. Fuel injection with DIS applies the best fuel mixture and timing for that RPM, load and temperature. Other sensors also trim the fuel and timing , but those are the basics.What Should I Expect? Ease of starting, good all around performance and better fuel economy. This will not make your worn out engine a good engine; it does not fix burned valves, leaking heads, cracked pistons, etc., it's fuel injection. It maximizes the amount of fuel and spark for the best all around performance and economy based on external factors which a traditional carb and points system cannot do.A laptop computer and the USB diag cable is not required, but highly recommended (http://www.obd2allinone.com/sc/toplevel.asp?cat=2). You can see everything your engine is doing and can tell in an instant if you have something not working/disconnected, etc. The wiring and all components are checked as a kit (on running motor) before shipment, but your skills and attention to detail can make this a dream or a nightmare.These kits are basic GM OBDC-1 computer with GM components. If taken to an automotive shop/FLAPS, they can scan the car just like a 94 and older Chevy truck to get the codes. We have not made any changes that will interfere with the GM code or signals.MORE ABOUT THE KITS: A Tach lead has been added to the wiring harness and the crank sensor is now adjustable up to 8 degrees. The wiring harness has all new Delphi crimps and any joints are soldered, heat shrunk and taped. All is enclosed in a wire-loom and is designed to drop in over the engine setup. The IAC sensor needs to be mounted in engine compartment; close to the air intake system is best. 140HP system is the 110HP with high inputs for fuel and air. The kit comes with Clark's turbo return "T", so no cutting or drilling of the sending unit is needed. The harmonic balancer will need the 1/4 " holes drilled (template included) and the throttle rod (trans to throttle actuator) must be cut (shortened) and re-welded. No other machine work or cost is required; this kit is pretty complete. Installation manual will be a written hardcopy and U-tube videos accessible from the website.Fuel Injection - More Info