Fast EZ EFI HELP please!

[David Pozzi]

IR systems are great for torque, but synchronizing the butterflies is absolutely critical to achieve driveability. The linkage must accommodate individual adjustment & the whole linkage has to "hang" on the throttle cable at idle the same way as when it's floored.

[GregWeld]

Originally Posted by David Pozzi

IR systems are great for torque, but synchronizing the butterflies is absolutely critical to achieve driveability. The linkage must accommodate individual adjustment & the whole linkage has to "hang" on the throttle cable at idle the same way as when it's floored.

SPOT ON David!!


I just disconnect the cross linkage (driver side to passenger side)… otherwise if a guy tries to set the idle - it's opening or closing both sides BEFORE I have them all sync'd up. Once they're sync'd then I can use just the idle screw.

[David Pozzi]

On weber carb set ups, I sync the front carbs to the rear carbs on each side using spring loaded balance screws, THEN adjust the linkage hex rod between them to balance left bank to right.

If there is a vacuum difference between venturies of a carb, it usually indicates a twisted throttle brass throttle shaft. When screwing on linkage arms, they are easily twisted, the good news is you can tweak them back. All v8 webber set ups should have the linkage pull between the carbs, not pull on the front or rear ends.