Quote:
Originally Posted by Frank Lee
You shut off half the cylinders and that improved fe? 
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A simplistic statement for a slightly more complex procedure. I put in a switch that disconnected the ground to half the injectors, which I would activate when low power was needed, even at idle. It would be gutless, but had the power to move the truck and could even maintain cruise on a flat road. Problem was, the o2 sensor read a "lean" condition and the injectors on the running side were pumping in way too much fuel, causing excess fuel to wash into the oil pan--bad news. So I disconnected it.
If I were to reroute the exhaust piping so only one side was read by the o2 sensor it might actually work as desired. If I also separated the intake and had the comp only read one side of the engine I'm sure it would work. Even considering the extra fuel being dumped into the running side I used less fuel per tank. I got an extra 2-3 mpg regularly (I was getting an average of 15) and one tank of nearly 20 mpg.