Just removed the ecotek valve from my valver and oh my god - what a difference!
I dont know if its just my imagination but the car pulls harder, brakes better and runs quieter than before - far superior! Im even getting the occassional flame out of the standard exhaust (it only happened on my old stainless system which i removed a few days ago)
If anyone has an ecotek id strongly suggest removing it to see the difference in performance cos if defo noticable - let the ecu do what its designed to! I just have to see if theres actually any difference in mpg now....