is there some kind of oring or gasket for the stove pipe where it goes into the LIM

should have mentioned 2000 ssei supercarged series 11

No, there is not, just slip the tube in and bolt it down.

i ask this question because when i spray carb cleaner were it goes into manifold it definitly changes my idle seems like vacum leak to me and im chasing a p0171 code

Take the pipe off, bet you have a cracked pipe. I think I have 2 of them if you need one.

It'* very common for the EGR tube going to the LIM to crack. If you slide the holding piece back once it'* off the engine and hold it up to the light, you most likely will see light.

BTW not important for this thread but the stovepipe is a NA motor thing. It sits on top of the LIM and funnels the EGR gasses through the stovepipe in order to get above the plastic of the UIM w/o cooking it. They are press fit into the LIM.

Ya, I was going to mention that. His first post threw me off, but the second post I knew exactly what he was talking about.

just take the EGR off. who needs gas mileage?

Please keep the posts constructive and helpful. When having a problem with vacuum and CEL codes, you realize how frustrating it might be to see a post like this.

Besides, he can't remove it without having the tune changed.