Will a greddy fmic ,No air pump, no emissions, no double throttle ,block of plates ,intake and straight pipe make my vacuum low at idle?
Because when it was stock I would get -17 at idle now I get -15 Can the moods be the reason ?
Thanks
Dan
oo ya it idles at 750rpm.

 

i have the greddy 2 row FMIC, intake full exhaust. i still have the double throttle and airpump.

car idles around 750-800 but i get between -16 and -17 vaccum.

 

i get about -20-21

 

Dam my motor is on its way out then ?
Time to save up then!!