Missfire

[90AWDTalon]

While driving home from work I got what felt like a missfire across all four cylinders. It felt like hitting a rev limiter. I was logging at the time, I leaned out around where the missfire's happened. I don't know it the missfire caused the lean readings or if the leaning out caused the missfire. Any one have any idea's?

Here's a look at the log, the highlighted areas are around when the missfire happened.

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[CanadianTSi]

Did it feel like slamming into a wall?? Could be fuel cut. Also are your plugs and wires old?? Could need to be changed.

 

[90AWDTalon]

Its not fuel cut, I hit that before upgrading my injectors, it's not any where near as violent. Plugs and wires are good.

 

[kpt4321]

Looks ignition-y to me too.

 

[talon1979]

If your rpm's seem to jump or stutter I would pull off the power transistor aka control module and take it to autozone and have it tested.

 

[90AWDTalon]

Some thing wierd is definatly going on. I just got home from bowling and I noticed on the way there that my boost was creeping to 25psi. It normally only creeps to 20psi, unless its really cold and then maybe 21-22psi. I think that maybe it was doing this earlier today and I didn't notice because I was watching knock instead of boost. If it was doing this it probably went much higher than 25psi, when I was hitting it tonight it was creeping at 4500 rpm's, the missfire earlier wasn't happening till around 5000-5500 rpms. The runs I made earlier I reved much higher, so the boost probably kept climbing. Some how I'm getting almost zero knock at these higher boost level's. Another wierd thing is, on my way home I was getting alot of part throttle knock (43 counts) in 5th gear, but if I went full throttle all the knock went away. Also no missfires, but as soon as the boost creeped to 25psi I let off the gas.

Still look ignition related? If so any ideas on what part of the ignition system. The wires are a week old, I've tried two sets of plugs that I've had no problems with in the past, and I tested the coil last week and the secondary coil resistance's were all with in spec. The primary coil resistance was too low for my multimeter to read, it doesn't read less than one.

Also kpt4321 I'm not sure what you mean by "-y."