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Turbo bark

12K views 16 replies 13 participants last post by  navyr113  
#1 ·
Anybody know a way to make the turbo bark on ED sound better like a blow off valve? Any re routing required? Or is there a way to eliminate the bark.... I live on a hill and for some reason when not in tow/haul mode my ED doesn't know to down shift or stay in lower gear when travelling up the hill. Sometimes end up with a bark or extreme lag.

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#15 ·
If you are not happy with the way it shifts, might give GDE's "Transmission Tune" a try. BTW, I deleted the constipated air intake baffle, made only a tiny difference, can hear the turbo at certain rpm's, barely. My business partner is awaiting to trade his hemi Ram on a Jeep Gladiator Ecodiesel. Rumors it may be offered with 6 speed manual.
 
#7 ·
I didn’t say it does spin backwards, but it tries, the incoming rush of air essentially hits a wall and goes back through the intake.... you guessed it, backwards. Turbo bark is more pronounced with a VGT turbo charger and common, has a lot to do with drive pressures and vane positioning, it also is affected by the transmission and torque converter lockup.


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#6 ·
Turbo "farting" is just part of a Variable Geomertry Turbo operation. A VGT has vanes that control the boost pressure, when let off the suddenly while building a lot of boost you'll get it. Blow off valves are not needed with a VGT as they just serve to relieve excess boost pressure when the throttle closes suddenly.
A new 6.7 Cummins will do the same "farting", it's just harder to hear over the engine.

nope, probably no way to make it sound better, it's just trying to spin backwards at 50-60k rpm
the turbo doesn't spin backwards, just the excess air pressure forcing it's way back across the compressor wheel.