I put ez efi on my duster. Before the efi I put about 8500 miles on it, with a Holley 750. After the efi I just don’t feel as comfortable. Originally I had it on a b engine performer. I tried a torker that I had, only thing I noticed, it sounds different, and I think gas mileage got worse. I had the ez efi sitting on the shelf a while, bought it second hand. But when I put it on they still seemed kind of popular. Now it seems antiquated compared some of the others It has the handheld unit, I can upgrade to the touch screen but it almost seems like it would make more sense to just switch to the sniper. I do have the tanks inc. tank. That I like, and I like the easy start and idle of the efi. That’s about it.