When I put a turbo on my diesel I picked up at least 2 to 3 mpg on the highway. And thats compairing driving 55-60 when N/A to +65MPH w/turbo.
Diesel engines are nice because the more air you can cram into the cylinders the better the fuel econony and power out put will be.
If you had a boost gauge you may see why there is a fuel economy jump at the higher speeds. At 60 the turbo maybe under such light load it may not be kicking out any boost, at 65 you could be developing 1 or 3 PSI and that small change can make a lot of difference.
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Originally Posted by Varn
Trying to find a way to get more boost at less speed.
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Water injection
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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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