I was going to get to the point of telling you there was nothing to worry about. If you still have your egr hooked up especially because sooner or later the exhaust soot will build back up and seal what you've taken off. I was going to ask if you were monitoring and noticed a distinct drop in boost, of if you felt it sluggish... But anyways, I though you were just shotgunning at at non-existent problem and I was right. But unless you're racing with it and looking to eeek out that last drop of HP, no worries. When you put headers and larger exhaust you drop boost, same effect... A lb or two is nothing...
Put it all back together and don't worry, or if it bothers you replace with JY parts as mentioned : )
