Holden 202 Ute EFI CONVERSION

Greg initially approached AVR performance to tune the Holly 4-barrel carburettor equipped Holden 202 Ute. We attempted to dyno tune this but with very poor results as the carburettor was not correctly matched to the application. The Holden 202 engine is a “Blue” variety with a mild cam & other light modifications but the carburettor was simply too large. Greg happened to have a factory EFI inlet manifold from a later model 202 VK Commodore so elected to upgrade the Ute to EFI for drivability and to make future enhancements easy to tune.

The conversion was undertaken by AVR and involved a few modifications to the Commodore inlet manifold to incorporate an Idle speed control valve and a 0-5V throttle position sensor rather than the factory switch type. Late model Nissan 350Z fuel injectors were also fitted to take advantage of their excellent spray pattern & increased flow rate over the Commodore injectors. The fuel system was also converted to suit EFI including the fuel pump, filter, return line and associated plumbing. A trigger wheel was fitted to the crank pulley along with sensors and associated bracketing. An Adaptronic 420D ecu was installed and wiring loom constructed to suit.

As you will see from the before and after dyno results below the improvement was very significant and the on road drivability improved no end to give the 1970’s Ute contemporary road manors.

  An Adaptronic 420D ecu was chosen for the project.

The AVR loom for the Holden ready to be installed to the vehicle

Before & after dyno graphs. The series of lower readings are earlier attempts

to tune the miss-matched Holly 4-barrel carburettor. The blue trace is the final result

of the EFI tuning.