Originally Posted by gonefishin776
I didn't really notice mine on my 07 until I put aftermarket exhaust on. Then it was terribly obvious.
Depends how you drive I guess, atleast with the earlier trucks when you went to stand on it to pass someone, for example...there would be this lag in response if you were in MDS. I think just some trucks are smoother than others, and maybe it's been fine tuned some on the 13s. I guarantee if you ever put exhaust on your truck, you will hear when it kicks in.
I turned mine off ASAP, cant stand it. still got the same MPG as with it
I did the same thing on an 06 that I had, driving home from installing my new flowmaster exhaust windows open so I can hear the hemi growl then it hits 4 cylinder mode. Blah! Sounded awful!
Almost threw up in my mouth a little bit! LOL
Vowed then to never screw with a factory exhaust again.