Thread: Did aftermarket TBI just get put on notice?

Tweet

Thinking more about the Carb Cheater, when tuning a carb we look for the right main jets for optimum power at WOT, the right metering rods for mid range and cruise, and then the idle mixture and idle speed. A guy/gal could use an air/fuel meter to fine tune choices, but that's not the norm. What this guy is doing is assuming you've gut your carb pretty well dialed in, then using a modulated vacuum leak with A/F ratio feedback, to optimize, using that tiny bit of "extra"" fuel vs letting it escape to exhaust. The issue is if you happen to be a bit lean Carb Cheater can't do anything to add fuel, it can only add air
I can see some value, but I think it would take years to get $400 in fuel savings, and it adds a whole new level of complexity to a simple carb installation.
Thanks for posting, Seth! Kind of like a Mythbusters episode!!