Hi there, I have been having a very low idle issue around 400-500 rpm and stalling on cold starts if I give no throttle input. once warm after a "spirited drive" if I jab the throttle it will return down to about 200 - 300 stumble around and gradually climb back to roughly 500rpm.
As far as I have read it looks like a possible vacuum leak and thats fair enough if i had intake modifications then I could back track my work. I should mention it is a bone stock gen 1 Mps 3 with a drop in k&n panel filter
I have checked plugs and gapped accordingly, loosened and tightened all intake clamps
any help with possible ideas would be highly appreciated, i'm fairly experienced with cars but am no mechanic.
Ps: the car has been like this since the day I have had it so I can't pinpoint the time of when this started happening.
Cheers, Jeremy