I have been looking lately at getting an egt and a/f gauge, but when i went to go order them, the guy at the local shop near me said that a wideband is a better bang for my buck. Also, easier to install. What i want to know, is which wideband has both egt and a/f, and will it be capatible with a cobb AP. I dont have the Cobb AP yet, but i am getting it real soon, so should i just get the Cobb AP or get both? Thanks for your help!