well i have blocked my egr up on my 04 nav i did not notice any diffrents but i think it sits on high boost. 7,10 psi at 100 k's about 13psi at 120k's and about 4psi at 60k's in 4th gear is this rite? im just woundering as i drove up to emerald this week and it was sitting on 9 +psi for 8hours