so as of lately my car has been sitting at about 17-18hg at idle and will read really lean and run rough at times at idle only, when i rev up it fixes itself.
And with the ac on it goes down to like 14-15hg but never starts acting up running really lean like it does with the ac off.

i fixed one vacuum leak i found around my methanol nozzle and reset KAM to reset the long term fuel trim but the car acts the same.

any suggestions of what to do. or am i just paranoid and my car is prob ok??