My b16a1 that has a b18 intake without the fitv won't idle when it's cold. It will just bog down and die after a few seconds if I don't keep it alive with the gas pedal until it's warmed up. Is it just because there's no fitv and I just need to adjust the idle screw? My idle when warm doesn't seem to be consistent, like around 700-1000 altough not surging and last time it was at 1500-2000 after idleing for a while. Any ideas?