Not sure if anyone would agree, but looking for opinions. I previously had an evc 4 on my mkiv tt ttc with no problems except the stepping motor went bad. Went out and got an evc 5 (evc II) that works fine but it seems like it was a lot easier to set and forget the evc 4. With the 5 you have to dial in approx. boost until it hits the level you want (very frustrating when street tuning), all that needed to be done on the 4 were two runs, one low one redline and then dial in boost you want. I am now single turbo with 850 inj. should I keep the 5 or go back to the 4? Will the 4 hold up to the single (70mm) boosting between 25-30 psi?