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Old 12-21-2018, 04:11 AM   #1 (permalink)
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Opinions on modifications

So I got a set of racing hub caps. And painted them black, i Also made a grillblock using insulation. At the bottom left the intercooler is blocked 100% which raises intake temp by around 20c the part that is not blocked off is where the active grill shutter is (smallest production car with shutters) what do you guys Think? The car is a diesel btw.


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Old 12-21-2018, 05:06 AM   #2 (permalink)
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Diesels need cooler air.
Increasing intake temps 40c in a diesel is bad.
The minimum air temp for best fuel economy in a diesel is some where between 0c and 10c, depending on the engine.
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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.
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Old 12-21-2018, 05:49 AM   #3 (permalink)
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That is not true. There has been a test on the topic which proved a 4% increase in brake specific fuel consuption for raising the intake temp from 10c to 30c on a diesel engine. Why do you Think tuneko ran without intercooler on his lupo 3l tdi?
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Old 12-21-2018, 06:32 AM   #4 (permalink)
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Thats a test one diesel engine.
Test it on yours.
Was the test engine a turbo?

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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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