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Cranking speed

Posted: Fri May 16, 2008 12:37 am
by pommie02
in megatune it asks for your cranking speed.
do you set it to below your actual speed or over ?
i ask this because is this the point when the ecu switches from cranking to running ?

Re: Cranking speed

Posted: Fri May 16, 2008 3:51 am
by grippo
The significance of cranking speed is that above it the processor stops trigger rise mode for ignition and stops sending simultaneous, fixed width crank pulses for the injectors.

Re: Cranking speed

Posted: Fri May 16, 2008 11:25 am
by Bernard Fife
pommie02,

Just to add a bit to what Al says, you want to set the cranking speed *above* your actual cranking speed because you want the cranking settings in effect always while cranking. There's more here: http://www.megamanual.com/mt28.htm#so

Lance.