No rev over 4K in park because rev limiter in park. It knows when its in gear and will give you more more more. It also kicks in at 105 m.p.h. (in my 03 base, may be different for different years) unless it "tuned out". I had plenty of room to run on a back road one night, and she hit 105 and stuck solid, I know it had more....WAAAAH