Hi everyone, so I found out I had 2 fouled plugs only on cylinders 1 and 7 (see attached, maybe this was caused by starting the car up for short periods in the winter months). Driving normal I wouldn't notice anything then about half throttle I heard a bang from the front and from the exhaust. I replaced the 2 plugs and everything is back to normal. My question is, this happened about 3-4 times (as I was trying to diagnose) and I'm hoping the chances that I damaged anything is slim?