Burst Knock Retard

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stevedarman
Posts: 109
Joined: Sat Mar 21, 2009 8:59 am
cars: VX commodore

Burst Knock Retard

Post by stevedarman »

I am confused, what is "Burst Knock Retard" and when does it come into play?
I have read it retards the timing for an instant under hard throttle,
but i thought that was torque management ?
I believe its nothing to do with the knock sensor.
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VL400
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cars: VL Calais and Toyota Landcruiser. Plus some toys :)
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Re: Burst Knock Retard

Post by VL400 »

Yeah its for when you give it a big wack of throttle its designed to stop it knocking, and does not use the knock sensor for any feedback. So its a fixed amount that it retards then gets slowly decayed to zero again.

Torque management in the early vehicles is just fixed timing to stop abuse - in $12 for instance its invoked when trying to go from Park to Drive with heaps of RPM.
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