I have seen gasoline fuel heaters and they usually don't seem to produce any results, it turns out most engine designs are really good at mixing air and fuel and burning them completely.
Warmed intake air on the other hand tends to work quite well on most engines.
Here is something you might try:
http://ecomodder.com/forum/showthrea...ler-29085.html
Its simply a faster warm up and a way to stay at operating temp. I am sure you know your cold start fuel economy versus your warmed up fuel economy. This reduces the time between the two and keeps the engine warm with the heater blasting.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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