Here's the deal: I recently took off my K&N intake (awesome kit, still for sale if anyone's interested) and replaced it with the stock set-up. It drove fine for about 30 miles before the CEL came on. So I just tried to read the code by jumping the ecu port. I went through the cycle about 4 times and each time came up with the same number: 15. I would get one solid blink, a pause, and then 5 successive blinks... 15, right? Only, I can't find anything that lists 15 as a legit code.

When I was installing the stock set-up I noticed that a couple of the vaccuum lines seemed a little loose so right now I'm guessing I've got a vaccuum leak.

Can anyone lead me in the right direction? thanks.