[Formulajones]

You don't have to permanently modify the intake with the notch between the secondaries. You could make a short 1/2" spacer from phenolic or wood to match the intake, and then put the notch in that spacer, just to see if it's something that helps the car or not.

Usually what I do before I do something hard to reverse on the intake itself. Usually a spacer is helpful anyway, increasing plenum volume.

Just tossing it out there.