So I've searched but I don't really know what to search for.. I recently had a clutch put in the car and the shop said that one of the EGR Solenoid valve nipples is broken off which is why i have the CEL on. Now the problem is when I floor it the turbo spools up and I can hear it but about 4000 RPM it just doesn't pull at all.. The exhaust also sounds different, I guess a word for it would be it sounds... flat. Is there a limp mode on these cars? I have Megan TBE and a BOV. I've never had problems with it until I got it back from getting the clutch put in and haven't noticed it because I had to baby it for 500 miles to break the clutch in. Any help would be appreciated. Thanks!

 

Boost leak is a possibilty, normally that is along with a sputtering and jerking feel. But I've seen a couple with smaller leaks that act as you describe. Both times it was the one down by the intercooler connection.