I had no problem getting mid to low 20mpg with the N/A diesel engine when I lived on the east coast. Thin air and cross winds that blow almost every single day out of the north or south from lunch time till almost sun down are killing MPGs.
The few and far between cross wind free tests I get show a 2 to 3 MPG improvement.
This is what it looks like so far:
Question: Turbo charging a turbocharger - Page 12 - Diesel Place : Chevrolet and GMC Diesel Truck Forums
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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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