I'm dealing with a misfire again. I really dont know why this point. Here is the long version of the story:
I've been having Kevin help me do some tweaking on the map lately and I haven't run the car hard for a long time because of a really bad misfire. It started after I did my timing belt and threw some 7a cams in. We got the car running and went out to go do a new tune for the cams and the car wouldn't hold boost at all to get a good tune on. Well I fixed the boost leak the next day, but it was already time to go back up to school, so I went back up without tuning the car. On the way I hit above 15psi once or twice and the car misfired hard...one time the car actually shut off.
I figured it might be something to do with the tune, so I haven't driven the car hard in the months since then. So I finally got a chance to have Kevin look at it with me and do some tuning. We backed the boost down to 160kpa and for about 10 runs so far, the car misfires somewhere in the pull. It can be seen in the logs as either RPM's wavering, or a little lean spike here or there (as a result of the misfire).
We have increased the dwell to 3.5 to see if that would help to no avail.
Any ideas? Kevin and I are both worried that its hardware related. The coils are grounded to the valve cover and they have a straight power source back to the battery with an inline fuse.
I know the boost is surging, its just a result of the most recent, low boost settings. It doesn't usually do that. The misfire is present whether thats there or not. In this log, there were two misfires. One around 4500 and one around 6k. The one at 6k is visible in the log where the cursor is currently.
