Ram-Jet fuel economizer for 1978

The Saturday Evening Post, April 1978

Another product from the inventive mind of Ed Almquist, an early hot-rodder and speed tuner. He founded Almquist Engineering in 1946, which for the next decade was the largest mail-order speed equipment business in the U.S.

An actual evaluation by the U.S. Environmental Protection Agency in 1980 found no significant improvements in fuel economy using the device, nor reductions in emissions.

Caveat emptor.