why no boosting over 22psi

[Yao]

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]

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]

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.

 

[Galantvr4559]

What size turbo?

 

[ade]

its on his sig, 18g

 

[Noobsauce]

O ya I do see it now sorry I was on my phone before and didn't see that

 

[Wizardawd]

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

 

[mitsuturbo]

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.