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It looks like the second turbo and intercooler has improved fuel milage a little bit.
Even with worse cross winds it looks like fuel milage is about 1/2 mpg better over the same up hill 200mile drive.
Testing conditions are so much more consistant on the east coast.
Also the air cleaner is drawing hot under hood air, where the single turbo setup was getting cool air. Diesels like cold air intakes, so long as the intake air is above freezing.
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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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