Quote Originally Posted by CanadianRyan View Post
You can't alter/blank the air flow through the EGRs and leave them enabled because the ECU monitors the flow (at least in the later models). I found this out the hard way in my '07 MY08. It will throw multiple codes including transmission fault which prevents gear shifting - all related to incorrect EGR flow. I then had them disabled via the ECU and it's been fine ever since. Superchips did this for me.
Same car and mine has been running perfectly fine for over 3 years with blanked EGR's, all pipework in place and no EGR delete patch, only removed the intake butterfly.
I occasionally get a code registered in my GAP tool but never had a CEL or limp mode occasion.