depends on outside air temp..?
That's the turbo vanes cycling, not the EGR.the egr will kick on and then muffle out sound for a second then go back?
I'm unaware of any temp sensor that is post turbo on the LB7 and LLY. Where are you getting a temp reading other than from the MAF sensor?LLYs have the smallest turbo mouthpiece for the turbo I wouldnt be surprised if you see 120* plus. Here in az I see 160s in the summer.