After almost a year, I've found that the DP Mod is a huge waste of time. It's my belief that people have an "initial perception" of performace gains due to the added exhaust note... but in reality, performace, especially at higher RPMs has been hindered! Unless you appreciate the added noise associated with the mod, which has become quite annoying... and the frequent filter changes, it really hasn't accomplished a thing! This includes gas mileage!
Anyone else found this to be true!??