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Low temperature thermostat will lower fuel economy and increase engine wear.
EGR restrictor will likely lower fuel economy.
Cold air intake will also lower fuel economy.
Air intake temperature simulators are guaranteed to lower fuel economy, they trick the engine into believing the air is cooler than it really is, encouraging the ECU to add more fuel.
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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.
Last edited by oil pan 4; 06-11-2016 at 06:47 PM..
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