I have the spicy cams, and love them. Yes, it idles a little rougher, no worse than my stock Toyota 4x4. The power is very good, all the way to the kill-joy rev limiter. The loss of bottom end is noticable, but not extreme. I can still pull steep hills at 55-60 in 5th with the cruise on and lose no more than 3 mph. Feels like a 2.2 up to about 3k. the power is very smooth, even lugging the engine, no hiccups or misfiring. Only got a CE light once, because I didn't get the #4 plug wire pushed all the way on the plug when I first put it together. A Haltec would be a nice addition though, to get the rev limiter a little higher.