I'm getting some low Vacuum. 14 inHG @ 500RPM to be exact. Also, when coming to stops with ym clutch pressed in my RPM likes to hang around 1200-1500 RPM for a few seconds. Is this becasue of the vacuum leak?
Where should I look for leaks?

One more thing; Isn't 500 RPM low for idle?

Thanks

 

Should be closer to 720 rpm for idle.

Increasing idle should increase your vacuum. 14" Hg isn't too bad, especially for 500 rpm.

 

How do I adjust the idle?

 

go here for some good info...

http://www.scuderiaciriani.com/rx7/idle_adjustment.html

If you don't have a shop manual...this may help...

http://www.scuderiaciriani.com/rx7/shop_manual.html

Your G-Force re-mapped ECU may have some hand in the 1200-1500 intermittent RPM issue...maybe???

 

The 1200 - 1500 RPM thing was there when I had the stock ECU. I noticed it is alot more extreme when there an electric load. like when I have the AC and the fans on.