We all have been patiently waiting for test results and have been in contact with you guys , other than the 3 people that have good results with the gb downpipe,me n other have very similar issues,
I sent you guys an email regarding how my tune went , and u replied and asked if I had a ebcs,and if I had oriented the dp as much as I could to the front of the car, n I did both, but orienting the dp towards the front should have been clear from the start seein most people will bolt it up.
So I had a Grimmspeed 3port ebcs
RacerX tmic and nameless axle backs,stock midpipe, and np dp
With a Cobb tuner
And had jarred from pdx tuning tuning my car I believe he is a reputable tuner and has been tuning subarus for over a decade and is a neighbor of yours,
Pls email him for the logs he has them on his laptop under devin 2012lgt
He has tuned a few subarus for me with good results
Now during the tune once he would get into boost it would immediately jump to 24lbs of boost and hit 395 lbs of torque and even with his expertise n tricks of ways to combat it , it couldn't be controlled I had to pay for tune fee350,dyno fee 140 , and 750for the dp ,and 150 to install all wasted n not putting all blame on anyone, but there are others who have had massive overboost issues not just 1-3psi, pls try and email him thru pdx website for the logs I just want a refund I don't have the time or money to redo this n after that that already happened I had to get a new downpipe reinstall n pay for another tune that working with no issues,
I was able to get a invidia catless dp used and all I changed was the downpipe n also added a nameless performance mid pipe ,and not touching anything else
And was able to tune with no problems target boost 19.5 with no over boost issues n got 306whp and 356 flbs