On Sun, 21 Sep 2003, John Rodgers wrote:

> Chevy diesel engine was dyno'ed at 190 BHP. A bolt-on propane injection
> kit was added and the engine dyno'ed at 400 BHP, ran totally clean, and
> specific fuel consumption was reduced, equating to improved mileage per
> gallon.

To get the 400 BHP they were also running a performance computer chip
upgrade and nitrous, if I remember right.  Gains with just propane are
supposed to be about 30%, I think.

Some people on the Audi-VW-Diesel mailing list have experimented with
propane injection on VW turbodiesels to good effect.

David Brodbeck, N8SRE
'82 Diesel Westfalia
'94 Honda Civic Si