Very informative thread. Thanks! I am currently using the OEM 2.5L stock uppipe. I rarely use my APv2.0 unless changing maps. Today, though, I decided to plug it and drive around to gather a general tracking of boost readings. In order to reach, for example, 13.6 psi in 3rd gear I had to reach an RPM level that's far higher than I ever allow myself to drive! So, my only thought is that I have, in fact, been "graced" with either an authentically defective OEM TD04 or the previous owner(s)' abuse was not identified by the dealer who sold the vehicle to me.Originally Posted by The mod list in your first post is lacking an aftermarket Uppipe. If you are still running the stock uppipe I suggest you read [URL="http://www.clubwrx.net/forums/engine-modifications/134325276-attn-02-05-wrx-owners-importance-uppipe-mod.html"
If the OEM 2.5L uppipe is, in fact, catless, I see no reason to invest in any sort of aftermarket uppipe - with or w/o an EWG. I will, though, look into catch cans and air/oil separators a little more.
So much to learn...that TiC thread is compelling as well. Though, as Anub1s mentioned earlier, "Pay to play my friend."