Yep, that is a fairly typical sequence for tuning a Holley 3 circuit. First remove the intermediate air bleeds, then buy billet metering blocks, then switch to a 2 circuit!

For a street car a person can also put power valves in both primary and secondary just to lean out the main circuit some more. If you have the billet metering blocks then the next trick to try is to make the PVCR larger and the main jets smaller to try and get the cruise AF lean.

The intermediate circuit can be very difficult to get right in a street car since the throttle position will heavily influence how much fuel gets pulled out of the dump tubes. Worst case is when you're driving down the freeway and the throttle blades are pointed right at the dump tubes and the intake vacuum is just sucking fuel out of the bowls.

The intermediate circuit was designed for NASCAR use so no surprise that it doesn't work very well in other uses.

Last edited by AndyF; 07/21/15 05:33 PM.