Originally Posted by _davin
Does the uppipe/ewg do much with the stock turbo?
Depends on some factors based on what I read and talking to Cobb.
With a Catted Downpipe, it only helps to stabilize boost with minimal power gains.
With a Catless Downpipe, our model year has been known to have problems with boost creep that is very difficult to tune out electronically and most of the times an uppipe/ewg is the suggested mechanical solution.
Again I'm not an expert just what I have read/assimilated. I could be wrong.