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Just to update the last fill up I was getting between 19 and 20 mpg on the highway while it was well below freezing with the suburban loaded up with tools towing my 4x8 trailer with even more stuff on it.
That is when the torque converter lock up let go.
The setup was HE351VE being force fed by an even larger T76 with one intercooler.
In my next round of upgrades I actually want to "intercool" the air as it passes from the discharge of the T76 to the inlet of the holset. Then "aftercool" the air again when it leaves the Holset before it goes into the engine.
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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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