you will be seein vacum at idle, and best idle be around 05-2 % CO.

and if map right / set up well, bein seein 0.5 - 1 % CO at 3500rpm.


or are you talkin about full throttle @ 3500 rpm, as that should be around 10psi and 12.0- 12.4:1 AFR, dont know wot that is in CO, but guess around 7-9%.