I just started tuning my stock block m42. I have stock compression, ID1050xds, Bosch 68mm DB throttle, Custom intake, EFR6758
I am trying to get the idle to behave. I am tuning open loop for now. Engine at temp all enrichments and lambda control is off. Anything below 1.2k rpm and the idle start hunting and surging.
I tried anything between 6-12 degrees of timing without much difference. AFR wise I tried 13 to 16 and its still very unstable.
I must add that i have RHD flywheel and tilton twin clutch and whole assembly weighs around 14LB which doesn't really help.
I saw some m50/52 ignition maps with idle timing as high as 20 degrees.
What do you set the timing to in idle areas?
Thanks
Untitled by w grync, on Flickr
I am trying to get the idle to behave. I am tuning open loop for now. Engine at temp all enrichments and lambda control is off. Anything below 1.2k rpm and the idle start hunting and surging.
I tried anything between 6-12 degrees of timing without much difference. AFR wise I tried 13 to 16 and its still very unstable.
I must add that i have RHD flywheel and tilton twin clutch and whole assembly weighs around 14LB which doesn't really help.
I saw some m50/52 ignition maps with idle timing as high as 20 degrees.
What do you set the timing to in idle areas?
Thanks
Untitled by w grync, on Flickr