Hey Mini_z, I had Ed swap out the stock OEM blow-off/bypass valve with the WMW Performance Blow off Valve from Way Motor Works here:
http://www.waymotorworks.com/wmw-performance-blow-off-valve.html 
At the same time Ed installed my NM CAI kit. Look here:
http://www.namotorsports.net/detail.cfm/part_cd/NM658856b 
I love the NM CAI kit it's absolutely beautiful... the wmw performance blow-off valve I'm not sure about. When Ed and I looked at both parts side by side neither of us could see any difference between the OEM valve and the WMW valve. The two looked exactly the same and the spring pressure seemed exactly the same. I love the sound of turbo now, but I think most of the improvement is attributable to the CAI and not the blow-off valve. Would I recommend the wmw performance blow-off valve? Once again, I'm not sure.
I think the ranting of this "malteseracer" sounds much more like the rage of jeliously or envy or some other personal problem based attack on Ed. It doesn't sound to me like this guy has ever had Ed work on his car, he's just angry for some reason.
I think it's safe to say that the majority of people, save one little p***ed-off off putz, highly recommend Ed to anyone wanting excellent quality service at a very reasonable price.
Cheers!