Worries...
 

I recently fitted a full Scoobysport/Janspeed decat and the car flies, although tonight after a very spirited driving I had my first pop/bang from the exhaust and all knock sensor lights went like christmas tree - even the red one, is this normal or should I worry?
It was like the car cut for a very short period with a bang from the exhaust and continues normally after that.
JIM