Been a rough ride but we're pulling through nicely on this project. We're not going to release the final details of the build, that is the property and knowledge of the builder, D1 SOHC as well as some in house trickery Toyama Racing Spirit helped with on the intake side.

Things are looking good and the motor has already put down over 400km's - we've managed to complete a smooth road tune and will need one more session to finish up on it.

High compression (We're sitting around +-11.0 - 11.5 effective, 12+ static) and the SOHC configuration as it stands have proven difficult to work with in terms of knock - the motor really is knock limited. We've pulled a lot of timing an made sure there's nothing - more testing during the day to be 100%. Ambient air temperature during the day affects this issue big time.

We're running the Gotech MFI Standard for now but possibly looking to move D1 SOHC over to one of the Toyama Racing Spirit Spec II ECU's located here.

All in all she's a fun little car, smooth power climb and easy to drive in traffic. Cold starts and hot starts are 100% and she idles very well, no troubles there.

We're going to hold off a bit longer before searching for more power - the motor needs another oil change and some more daily driving to report any drive-ability issues that may crop up during hot weather.

The vehicle is to see further transformation on the styling side as well as performance, watch this space for updates.

Here's to yet another good Toyama Racing Spirit tuned vehicle. Enjoy the ride Jacky!