Enginr pinging when i blip the throttle

[ron1999]

M42 DASC engine,
all original setup,
original fuel pump,
fuel supply has RRFPR provided with the DASC kit
injectors are 19lb/s from Saab 900 turbo

this is like this - when i blip the throttle the engine is pinging, if i keep on with open throttle, pinging disappears, but at the first second or so - the engine pings really hard.
p.s. this happens when the engine is hot-very hot, when the engine is cool, this does not happen or happen a lot less

what can this be?
im using my car for drifting, and there this thing happen all the time...

[horror business]

The factory fuel pump may not be cutting it just to start with..

[jlevie]

Pinging is usually from insufficient timing advance.

[Nick_08]

Pinging is usually from TOO MUCH timing advance.

Fixed ;)

You are most likely going lean when stabbing the throttle. You can't do much about that with an RRFPR. As your engine gets warmer it requires a little more fuel.

Pinging is from detonation. Too much timing/ lean mixture or a mix of the two. More fuel will compensate for the timing to an extent.

[digger]

you sure it's pinging and not some other noise?

there is very little flow to cause huge pressure and temp needed for pinging by blipping the throttle

[ADlBOO]

If its knock their could be so many things causing it. What octane fuel are you using, how much boost, timing advance?