You are wrong. I drive the same roads everyday. I pay attention to the gear I’m in. Before I would cruise in 8th the entire highway portion to and from work. Now the only time it shifts to 8th is if I let off the gas. Then of course I start to slow and the downshifts again. Around town it’s fine. The issue is that on the highway it now struggles to maintain the hi gear and having to constantly be in a lower gear when cruising make the Jeep sound like sh!tVery unlikely the delete caused any changes. As for the downshifting you just notice it because you can hear it. I think it sounds great and have had nothing but compliments about it. I am running 35's and average 20 plus mpg in the summer. Very happy with the Dynomax delete pipe.