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Adding a second turbocharger and intercooler has helped fuel milage.
In an unfair test that favored the single turbo setup it was beat by the twins and intercooler setup by about 1/2 MPG.
The single turbo setup had a cold air intake, where the twin setup was drawing hot under hood air. (diesels like cool air)
Also the cross winds were far worse during the twin turbo setup test.
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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; 05-31-2013 at 03:53 AM..
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