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why no boosting over 22psi

Yao

Well-known member
Joined
Mar 6, 2001
Messages
810
Location
Denver, CO
K, found what why it wouldn't boost past 22psi and dropped boost to 14psi at 6k.







What could cause this?? my manifold is whitish looking too, here are the pictures, is my tune off??? running too lean?





 

Noobsauce

Well-known member
Joined
Apr 7, 2012
Messages
159
Location
Beaverton, Oregon
Looks normal to me. You have a Wideband to log your afr? I would have pressure tested and smoke tested before tearing everything appart
 

Yao

Well-known member
Joined
Mar 6, 2001
Messages
810
Location
Denver, CO
Yeah, I am using Wide band to tune. If you look at the 2nd picture closely, you can see the chewed up/chipped turbine wheel.
 

ade

Well-known member
Joined
Aug 16, 2011
Messages
303
Location
Paumanok NY
its on his sig, 18g
 

Wizardawd

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Joined
Aug 7, 2007
Messages
1,323
Location
Franklin, NC
From what I can tell from the pics, the turbo and color is fine.

It's the exhaust manifold leak that's probably killing ya. You can see the leakage from the flange pic on the #4 cylinder exhaust port. And then look at the turbo pic where you can see a crap load of black soot all over your water pipe and the engine side of the compressor housing.

Wiz
 
Last edited:

mitsuturbo

Well-known member
Joined
Jun 2, 2008
Messages
3,544
Location
Near Seattle, Washington
That turbine wheel looks like it's shot. That sucks, man.

Also, your manifold could use a bit of port work. Taking that step out will probably help a bit. Your oil line needs to be replaced. It looks like it's falling apart. I guess when you replace the turbo you can fix that as well.
 
Last edited:
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