High Idle SSI upgrade on SC

[macssc911]

Pulled my engine on 82SC, fixed all possible oil leaks went every seal every gasket replaced, Installed SSis from stock exhaust, sound incredible, problem is I started f the first time, idle was about 1500 then it eventually got to 2200 and stayed there. I am guessing a vacuum leak even though I was very mindful of all connections and hoses,when I had engine out I am concerned about the line that runs around the back side of the compartment against fire wall from the unit on the a/c side around to the connection on other side of compartment into the bottom of the air box, its and old hose. Anyone else got in ideas or should I just start looking for vacuum leaks Thanks

[macssc911]

bump

[timmy2]

Start looking for vacuum leaks.

[Targa Time]

Years ago when I sealed up the assorted leaks in the CIS on my 81 I had to have it recallibrated due to the change in air/fuel mixture. My guess is that the change in RPM is due to a lack of leaks.

[kodioneill]

Check distributor advance possibly it's sticking.

[macssc911]

Thanks to all, I think I may be leaning toward the tightening up of the entire engine may have changed CIS operation. If so not sure if this is something I should attempt, do I need certain tools or should I take to a Porsche Mech The one thing I have noticed this week starting the engine, it fires right up idles about a 1000, then over a period of about 5 minutes as engine warms it goes uo to about 2000. Does this ring a bell
Thanks to all