Quote:
Originally Posted by RustyLugNut
. . . hot air is better for combustion for many reasons. The most obvious is the combustion temperature is elevated.
But, as you mentioned, for modern vehicles it is not so simple as the electronic control units are capable of making significant changes.
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I have seen plenty of test that show diesels get better fuel economy with cold air intakes until the ambient air starts to get around freezing.
In my diesel the air is heated to 1100'F adding more heat will waste power compressing the air and forcing the heat through the piston and combustion chamber.
Also adding more heat to the combustion process will increase NOx.
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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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