Just called the FAST# for the info. on the NEW Wide Band A/F Guage. What I got was Comp.Cams teck dept. . This unit isn't even close to being released or sold. They claim you don't need a Laptop to get your A/F ratio with this unit. But they some where forgot to mention you had to use their over priced ECU to make it work. I would guess PriceMotorsports 351W manifold will be here before the FAST A/F guage is.