4 Throttle Body Injection

The 4 throttle body system will use the standard Corvair Throttle linkage and the 4 port air cleaners.  The 4 throttle body system will NOT use progressive acceleration as the injectors evenly distributing fuel through 4 throttle bodies will give a better and smoother fuel burn.  There are various lock out procedures to spelled out on the Corvair forums, but the most important part is that all throttle bodies open evenly.

2 and 4 TBI have been developed and currently undergoing testing.   The 2 TBI version can be used on the 140 HP engine with block-off plates or use thin block-off plates and leave the secondaries there for looks and to balance air cleaner if desired.


The 4 Throttle body Injection system can also be used on engines that have had the extra Carburetor pad added (Fitch type).   The factory linkage is used, but Carburetors will be replaced with Brown EFI Throttle body injection units (TBIU).   The Throttle body injection units will fit with normal gaskets, but will need insulator to ensure proper height of the TBI.  140 HP Corvair engine has its own program which will be supplied after purchase.   Throttle bodies can be easily bored to 1.25″  for more top-end performance, but will require reprogramming after install for those wanting different performance parameters those originally designed.  Our TBI design allows the use of only one (1) injector per TBIU by using high pressure and advanced injectors which highly atomizes the fuel spray, even at low RPMs.  You must have your own 140HP linkage as it is NOT supplied in the kit.  You have a choice of ignition types depending on your needs or engine configuration.  


Kit Contents (Under Construction)

1 ea    Throttle body assembly w/Injector and TPS** – Even side

3 ea    Throttle body assembly w/Injector** – Odd Side

1 ea    Fuel Line Right Side

1 ea    Fuel Line Left Side

1 ea    Fuel Line “T” to Regulator

1 ea    Fuel Pressure Regulator/Filter

1 ea    Map Sensor, GM Type

1 ea    Air Temp Sensor

1 ea    Narrow Band O2 Sensor

1 ea    Head/Engine Temp Sensor

1 ea    Fuel pump block-off with O-Ring

1 ea    Wiring Harness with Relays

1 ea    ECM Computer (pre-programmed and user adjustable)

1 ea    Coil, VAG Electronic Logic

1 ea    Crank Trigger w/Bracket

1 ea    36-1 Trigger Wheel

Projected Price:  $2299.00  This includes all items from the fuel pressure regulator to the engine. Fuel
Pumps and return line are NOT included.  

** - Usable cores are requested.  See Cores Page.