Right now going through the tuning process with my car, and during WOT im getting what really sounds like compressor surge, and pretty bad. I will try to get a video of it.

its 35r twin scroll, 2 tial 44 wstegates, tial q bov, grimmspeed 3 port for boost control. car is speed density.

this is my vacuum routing, on my turbo there is no hole or fitting right on the compressor outlet.

 

idk if you can hear it in this one, this is 3rd gear.



this is just 5th gear, you can hear it start to do it in this one.

 

ttt

 

I have the same problem but mostly in higher gears at low rpm

 

I'm going to try to get a better video doing a 3rd gear pull. I feel like both those vvideos don't really do justice for what it is doing.

 

second vid is the turbo going into surge, not the BOV

first one is too broken up to tell

run a DIRECT source to the manifold for the BOV, not T's into anything

 

You need to route the #1 nipple back to the intake manifold and not vent to atmosphere. At least that seems to be what it shows on the website.

 

on the site it shows #1 being routed back into the intake so there is no metered air on a MAF car being bled off. Speed density isnt really an issue with bleeding off that air so it can stay open.

My concern was more with the feed side of that, with the BOV line being T'd off to the 3port. Need to find a seperate source or use a vacuum block for extra ports.

 

Have a vacuum/boost block coming. Going to seperate the Tial to its own feed, and the 3port will also have its own feed. (fpr and boost gauge as well) I'll post up what findings i have with this.

 

Did you ever resolve this issue? What was it?