It's not that I can't tune them, I just don't see or feel the power that everyone is so excited about. As far as nascar is concerned, that's not racing imo. Just people driving around in circles for 3-4 hrs. Quite honestly anyone can do that, at any speed. Notice its called nascar, the word racing is not in it's name. And nascar has so much ******** regulations it's not even laughable. Now drag racing is racing. Just pure heads up, get r done in 10sec, wins. Best part about nascar is the wrecks and the last 5 laps. If they really want to make it interesting, half way through the race turn around and go the other way. But, this is all preference. Most every friend of mine does not like holley. If you like holley, great. If you don't, great. All in what you like and understand. And as far as powering more wining vehcles in motorsports. Other than what, 3 other carb mfgs? And holley being (I think) the most ready to sponser a competitor, what other carbs are people going to run. Most people badmouth q-jets, calling them crap, can't perform, hard to tune, etc... But, understand it, tweek it, custom mod it, make those small changes you have up your sleeve, and it'll outperform nearly ALL aftermarket carbs. There, my .02 are in the pot, lol.