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729 Posts
Hey I just got a new tune on my truck and im getting some turbo bark when im letting off the throttle. I was just wondering what i can do to help prevent it. Is a BOV possible? or would that even do anything?
How to prevent Turbo bark?
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1,031 Posts
what kind of tune? how bad of a bark under WOT? and left off?
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7,421 Posts
Turbo bark is horrible for your turbo.
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12,050 Posts
does it sound like this
YouTube - Tommys Turbo Bark
or like this?
YouTube - Duramax turbo bark
if it sounds like the first video it is VERY BAD!!!!!!!!!!!!!
it will ruin your turbo fast
YouTube - Tommys Turbo Bark
or like this?
YouTube - Duramax turbo bark
if it sounds like the first video it is VERY BAD!!!!!!!!!!!!!
it will ruin your turbo fast
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729 Posts
Wide open when i let off quickly its pretty loud. But its a tune from HP Tuner, around 200horse tune
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729 Posts
Sounds like the first, but really only when my foots through the floor and i let off quick
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7,421 Posts
Don't let off fast you need to ease off the throttle. even a 50hp tune you can bark the turbo if you go from WOT to nothing.
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1,245 Posts
hope you set aside money for a tranny runnig that tune
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7,421 Posts
I have barked the turbo going from WOT to half throttle on my pulling/drag tune.
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729 Posts
No i dont actually. Its not gonna stay on it, i didnt have time to get a safer tune set up. But i mean ill be getting a safe tune on it this weekend
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9,706 Posts
yeah, thats your turbo going from like 100,000rpm in one direction to many many thousand rpms in the OPPOSITE direction in like half a second. VERY VERY Bad for your turbo. Only way to permanently prevent it is with a blow off valve. But the only one out there is the BD BOV and it's like $600+
In the mean time, just let out of the throttle SLOWLY. Otherwise you'll have 25+psi of boost spinning your turbo in the opposite direction when you let off the throttle. Won't take too much of that abuse to break the turbo shaft, then you're really screwed.
In the mean time, just let out of the throttle SLOWLY. Otherwise you'll have 25+psi of boost spinning your turbo in the opposite direction when you let off the throttle. Won't take too much of that abuse to break the turbo shaft, then you're really screwed.
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7,421 Posts
I see that as an opportunity to upgrade Jesse. :drink
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1,031 Posts
lol i herd a duramax make the bark like the first video and it crack his compressor housing..sounds like trouble..also sounds cool in a way. but i am running around 185 and i can go from wot to nothing and it doesnt bark at all it will only bark if i hold the break like a boosted launch and not take off but left off the throttle fast.. i didnt know it was bad until DGKPOWR sent me a pic of his "bark mark"
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7,421 Posts
Well its harder to bark a VVT turbo.
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1,031 Posts
why is that? and idk if it was vvt or not.
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7,421 Posts
You have a VVT turbo. The LB7 turbo is the only one in the duramax line that has a wastegate on the turbo. Every Duramax after that has been a VVT.
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1,031 Posts
Is that why it is the only gen that cant sound like a jet at idle?
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