so I am on a different carburetor now, a Demon 525 vac secondary.



when accelerating, the vac secondary seem to open for a split second causing stumble. is this a normal operation for this type of carburetor? i dont think this happend with my holley.



the only way i am getting it some what drivable is to adjust the accelerator pump cam with one that give a big shot a beginning to cover up the secondary opening. am I going it the correct way or is there something else i need to fix on the carb?