I've actually been experiencing some of this with my new Oasis XP. It does a great job but it is incredibly fast. My old machine went slowly around the car and even a basic wash was close to 5min. Now at about 2 1/2 min I've had a few call and ask if the machine was working! But one guy left a message about feeling he wasn't in there long enough and assumed their was a problem with the machine. He called back a few minutes later to say that when he and his wife got out of the car, they were surprised how clean it was. Just going to take a little educating for the few that it's faster because it does both side at the same time.Why not? Tunnels charge $20 for a 2-3 minute ride through on their top package. I know IBA’s can take different amounts of time for the various packages, but it’s all relative - your bottom wash is probably going to be quicker too. People will respond to quality. These days, most people want things faster, and if the quality is NOT sacrificed, they will pay for it. It also takes education. If you have customers who currently wait in the bay for 6-7 minutes for a top wash, there may be some concern with a newer, faster machine at first, but it’s a learning curve for them. Let them see it gives the results they expect.
But the people that care are the ones sitting five deep in line.I replaced some machines back in the day with faster ones. The top wash was significantly shorter, and some customers felt it didn't do everything it was supposed to do. As far as how long the wash process itself takes, I don't think anyone cares or notices if your wash is 4:30 and Bob's wash on the other side of town is 6 minutes, they're looking at their phones, not the wash.. We care about length of washes because of throughput, but I don't think the customer gives two squirts, with the exception of the illusion it didn't do much on significantly short washes.