Many thanks Gents,

So, what's the issue if I don't run a Knock Sensor ?

My Engine is spec's as follows, so wondering if people do without ?
RS500 Block (Small Cores)
Long Studded
4x4 Head
H-Section Con Rods c/w Group A pocketed Pistons
BD14 Inlet & BD10 Exhaust
T34
Collins Actuator
3Bar Map Sensor
Siemen 55lb Injectors
Big Wing & Baffled Sump - High Pressure/Flow Oil Pump
Wasted Spark (Coil Pack)
P8 ECU - Closed Loop - Motorsport Development Evo Chip

I'd like around the 350BHP mark - again not sure if this info helps with you answering the question ?

Cheers everyone