Too much boost/ PL Analysis

brif

Member
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.




2011_0709Image0044.jpg
 

ghall

Active Member
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

RIP DAVE
Staff member
TurboBuick.Com Supporter!
What wideband are you running and what's up with the TPS????
 

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TurboDave

RIP DAVE
Staff member
TurboBuick.Com Supporter!
BTW, where are you in SW WI???? I was born and raised in Richland County.
 
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