Checking the balance of the Throttle Bodies

The car has very nice individual throttle bodies, made by Jenvey.

 Today I got a synchrometer so I can test the balance across the 4 bodies.

This measures the airflow in kg/h. Jenvey provide instructions on how to balance them.

Having warmed the engine and removed the air filters, I set the idle adjuster screw down a couple of turns to give a fast idle. Normally this screw is out and doesn't affect the idle.

I tested each body and got a reading of almost exactly 4kg/h from each one. I'm happy that the balance is correct so I didn't adjust the idle bleed screws.