I've done the opposite. I used to loan out a Factory Hp 440 AVS 750cfm to people with Holleys that could not get them tuned right. After running the AVS for a few days they would come back raving about the Carter. Same for a TQ. I/they threw a lot of Holleys in the trash. I finally got my friend to ditch his Holleys on his street cars, after his brothers' 55 Chevy caught on fire from the Holley carb and ruined the front half of the car