Too much boost/ PL Analysis

[brif]

I can't turn my boost down below 18psi. I have a TA49 turbo, THDP, TT6.1 chip, and I am using a RJC boost controller. I have the controller as long as it can be with only 2 turns left until it falls apart. I presume the adjustable wastegate actuator I have is a standard version (see pic) and it is set per rjc's instructions. Anybody have any ideas? I am seeing some knock on my PL files and I'm sure the 18psi with 93 oct is as good of a place to start as any. I will attach some PL files if I can figure out how to attach them.

 

[brif]

View attachment aug3.zip
View attachment sept1.zip
View attachment sept2.zip

 

[ghall]

First thing i would check is make the wastegate puck inside the THDP is moving freely and not sticking. Pop the wastegate rod off and see if it needs some lube.

 

[TurboDave]

What wideband are you running and what's up with the TPS????

 

[TurboDave]

BTW, where are you in SW WI???? I was born and raised in Richland County.

 

[TurboDave]

What wideband are you running and what's up with the TPS????

I had the wrong WB selected for the view I posted. You're running WAY leaner that what's displayed.