Having WGDC and holding boost issue

Dr.gore335

New Member
Jul 19, 2021
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Hello everyone,

I wanted to see if I could get another opinion on this forum on an issue i'm having. I'm currently dialing in a Big boost kit for my n55 and I keep seeing a high wgdc even though i should be good for another 4-6 psi on the turbo. Did a boost leak smoke and pressure test and found no issues. The logs look good but you can see the boost fluctuating during the WOT pull in 4th. Any ideas of what I should try next? Just for reference its a big boost kit 3.4 with a Tial 50mm BOV with a 8lb spring. I'm planning on changing the spring out today or tomorrow to a 12lb, but i'm not sure if that could fix this issue. Planning on going through and checking all of the vacuum lines around the car to see if there is a small leak somewhere but so far nothing has been found. Also, during the pull, I experience the car breaking up around the mid range (3500prm-4500rpm) but still pulls strong. Attached is the log from last night where you can see the boost fluctuating.

https://datazap.me/u/drgore335/log-1626706110?log=0&data=4-15-26-28-46