[olddog]

Every book I have read on testing an air gap verses a Vic Junior on the same engine with the same carb shows that the Air gap gives much more low end torque and flatter torque curve. You have to have a combo that is capable of fairly high rpm for the Vic Junior to pay off big. On a typical street engine, you will give up a lot more torque, where you drive most of the time to gain a little bit at an rpm you will rarely see.

Sure you might make 20 Hp more for bragging rights with the single plane but on the street is will feel weaker where you drive.