Quote:
Originally Posted by red-beard
How would a filter, on a modern FI engine, improve fuel economy?
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Good question...
Best guess... The air being drawn in is less restricted.
So the air filling the cylinders may be at a slightly higher pressure than with the OEM filter.
More air = More oxygen producing more power. At the expense of leaning out the mixture slightly but
because the EFI system has some safety built into it this shouldn't be a problem.
Also... MSD state that their ignitions produce more power than OEM systems.
They even make this claim with their DIS4+ system that is designed for modern coil pack ignition.
I'm not sure any of it is true... It would take extensive Dyno testing to prove any of this.
Has anyone done independent testing?