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Old 06-22-2013, 08:04 PM
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Turbo Cough

Hello all. I just put my truck back together. Installed an EGR cooler with plugs welded in the ends and rebuilt my turbo (with the Garret rebuild kit). Everything seems to be running fine, but I hear three "coughs" whenever a quickly release the throttle during a hard acceleration. Is this extra boost getting dumped off or something else? It did this before I installed the new EGR cooler as well.

-Jason
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Old 06-22-2013, 08:16 PM
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It's unused air coming through the turbo. Fairly common actually my truck does it terrible if I chop the throttle.

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Old 06-22-2013, 08:24 PM
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Yes, very common. Is also very hard on the turbo. Picture your turbo spinning close 10,000 RPM then all of a sudden the flow thru it gets reversed. Think of it like your auto transmission being thrown into reverse as your driving down the road.


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Old 06-22-2013, 08:36 PM
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The technical name is "turbo fart". Mine usually shows up alot after an air filter cleaning.
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Old 06-23-2013, 04:06 AM
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Quote:
Originally Posted by gblauf View Post
The technical name is "turbo fart". Mine usually shows up alot after an air filter cleaning.
LOL. Actually it's really called turbo surge but turbo fart sounds better.


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Old 06-23-2013, 05:27 AM
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Is there a fix?
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Old 06-25-2013, 04:39 PM
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Is there a fix?
Waste-gate. So nothing cheap.


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Old 06-25-2013, 04:40 PM
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Or maybe a whole new turbo and injectors. IDK Easier just to not back off the throttle fast.
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