Seriously. I had the briliant idea to get a 67GTQ, and run low boost with the stock fuel system. A WB was NOT part of my plan. At 17psi I was running 14.5:1. Imagine if I didn't have a WB to let me know this. I would have trashed my motor.Midnight Hour said:Yep. Get a real wide-band. I wouldn't own a car over basic BPU without one now that I've got a WB with my single.