Lately the S has been running rough and a bit jerky, mainly at slow speeds on
acceleration/deceleration. It's also really effected when sitting through a lot of
traffic (10-15mins of standing/crawling), even though I

 

Yes its the correct one. The tie wrap is the identifier.

I have had this on and off for a while. All you need do is remove the MAP sensor, blo into it to clear away any dust. Give it a tap with a rubbr handled screwdriver and put it back on.

I do mine every 3 months or so (whether or not its needed) and its been fine.