Toyota 4AGE Big Port - Heritage ITB kit

A Toyota Individual Throttle Body (ITB) kit for fuel injecting your Toyota 4AGE big port engines.

This classic car fuel injection kit includes a manifold, a pair of 45mm Heritage DCOE throttle bodies and 40mm long air horns.

CKTY02 - Standard Big Port Kit

CKTY03-TD - 4AGE Heritage small bore Kit 

Discover the full Toyota range here

Kit performance is enhanced by careful positioning of the EFI fuel injectors being located further upstream than standard and directly in the part throttle turbulence of the butterfly.  This allows increased time/distance for improved fuel mixing increasing torque and power where its needed.  Our spindles profiled to minimise cross sectional area at full throttle and an 8 degree shut angle (shallower than most) gives finer control at small throttle openings.  Our kits come built and balanced ready to fit you your engine and win races.

Jenvey Dynamics design, develop and manufacture all products in house often working with leading engine builders.  Uniquely, with our own foundry, all castings are created in the same factory that they are machined and built in.  Our cast systems are significantly lighter than fully CNC parts and all major components are backed up by rig tests of over 1 million cycles.  All our standard kits are proven but our throttle systems are extremely modular allowing bespoke throttle sizes and system lengths. Please order components individually for bespoke application.

This Jenvey kit requires an aftermarket ECU.

Drawing and other information can be found at the bottom of the page

Option and Accessories

Throttle operation can use a cable linkage kit - CLS3

An idle air system can help make road cars more useable but is not required with electronic actuation

Bosch 350cc injectors are included with this kit along with Throttle Position Sensor.

We would recommend our individual mesh filter - ABF6-65