I asked this question could not get answer, you are using your original maf sensor with tt225 housing right ?

 

...

*whistles while slowly walking to car*

 

Hear this!!!! --- Plug out the damn MAF completely!!!

I was able to boost the same as with it plugged in.

 

Thats just stupid.... Dont you know what a MAF does?

 

HA! Details...

 

Did another log. I'd post it, but photobucket is down for maintence.

The numbers look much worse with the stock sensor though. The air mass drawn in is cut in half and the timing retard doubled.

 

Original-


Last run-

 

let me refresh my memory

-You have stock sensor with tt225 maf housing
-No boost leaks ? You are sure 100% (I was sure too, untill I found it)
-Spark plugs seems normal no interesting color on them.
-N75 valve only elektronicky plugged. There are no hose going into.
-MBC connected on the hose that goes to the Wasegate

 

TT housing only- Check
Boost leaks- I triple checked the lines
Spark plugs- nada
N75- Electronically plugged in and not connected to any vacuum lines
MBC- only connected to the turbo and wastegate

 

-set the fuel pressure to 44.1psi ?
-mbc is all the way up or down ? more screw into means more psi. turn it all the way down and try if you can boost little more (be careful about over boosting one eye is on the boost gauge when you test it)