E3 spark plugs....Gimick or?
Back in the '70's I purchased and installed a set of "fire injectors" in my parents new '71 Road Runner. They were advertised as being so much more efficient than regular spark plugs that after installation, one would notice the idle speed would actually increase. Lies, lies, lies.
Back in the '70's I purchased and installed a set of "fire injectors" in my parents new '71 Road Runner. They were advertised as being so much more efficient than regular spark plugs that after installation, one would notice the idle speed would actually increase. Lies, lies, lies.
