I am having a bit of difficulty figuring out what is plaguing my car. I am running a 20g swapped 09 WRX with full bolt ons and pushing 331hp/351tq at the wheels. Stock internals. The other day on my way to work the car started running rough intermittently. (low power, strong vibrations etc) It would happen for about 5 seconds then go away completely. I finally pulled over and got a tow home when it started running rough continuously. There was no CEL, however the roughness counter on cylinder 3 was counting rapidly up to 100 over and over again. Raw fuel smell from exhaust as well.
The first thing I tried was swapping the coil packs to no effect. Car was still not really running on cylinder 3.
I tested compression on cylinder 3 only and got 127 psi
The plug looked fine, nice golden brown and and I tested the spark with the plug out of the car and it appeared strong.
I am a little stumped. Cylinder 3 obviously seems to be getting fuel as I can smell raw fuel in the exhaust, and my coil packs are fine and there is a strong spark. Any ideas what I should look at next?