I started with a new Holley in the 70's. I could tune it just fine. Tried everything and had it dialed in good enough for a "64" Barracuda with 273 to match the power to weight ratio of "68" 383 Road Runner. I just can't stand "having" to work on stuff, let alone fuel leaks, backfires, and burning your car to the ground. But when you get a really good, carb the Holley is nowhere close. No reason for me to ever run a Holley along with all the extra "tuning" parts. And for the record, I run original Carter carbs that are usually 50 to 60 years old with a 100,000 + miles on them. Just clean them up, put a kit in them, make your adjustments, forget about the carb, and enjoy your car. I get more power with better mpg with my used Carters than any Holley I tried.