2 Throttle Body Injection

Performance, Economy and Durability:

The 2 Throttle body Injection system can be used on ALL Corvairs except the turbo version.   The 2 TBI kit can also be used on the 140 HP model, but will need block off plates (which we can supply) and will require the 140×2 TBI ECM tune.  These kits use either the Corvair distributor or DIS ignition system.   The factory linkage is used, but Carburetors will be replaced with Brown EFI Throttle body injection units (TBIU).  These TBIU are Corvair Carbs that are modified to be a throttle bodies and uses the same linkage and many parts of the original Corvair carb.   The throttle body injection units must use the insulators to ensure proper height of the TBIs for linkage clearance and leverage angles.  Each Corvair engine type will have its own tune and we plan to constantly update the tune with the community of EFI tuners.  User modification of engine tune can be accomplished with laptop for those wanting different performance parameters those originally designed.   All Throttle bodies are bored to 1.25″ for better mid to top range performance.  We use one (1) high pressure injector per TBIU which highly atomize the fuel spray, even at low engine speeds.  The TBIUs are slightly taller than the original Carbs by approx 1/2″ to allow for air cleaner clearance and maintain optimum injector angle.  The FC/Early models will need a modification (drill 2 holes) to allow for the air cleaner hold-down springs.  The electronic idle control advances the idle when the engine is cold, or as needed on engines equipped with an Automatic transmission.  We program the ECMs for middle of the road engine setups, so some engine combinations will require user adjustment with a laptop.  All of our kits are supplied with NBo2 sensors, but support the use of Wideband O2 sensors (purchased separately) for advanced tuning and precise fuel control. 

Ignition:  We offer 2 types of Ignition for the Dual TBI kits: 



Kit includes all items from the fuel pressure regulator to the engine. Fuel Pumps and return line are NOT included.

 Just so you know… Brown EFI is for off-road use only