Quote Originally Posted by Terminal_Crazy View Post
I still don’t get why they’d go to the trouble of ID’ing only 4 out of 8 cylinders when you could ID all 8.
Bear in mind that with a batch injection start routine and a distributor, what I'm about to say is almost pointless but...

Because even at cranking speeds around 150 RPM, the difference between firing on the first or second compression stroke after the bendix engages the flywheel is almost imperceptible.

And...

Because after the ecu has determined rotational position all it needs to do is follow the firing sequence on the low-res rising edge signal to know where it's at until there's a stall condition.

To further expound on the topic, I'm starting to think the gen 2 LT-1 fires too soon. One of my first modifications to the diy-ltcc may be a surrogate low-res signal to prevent the ecu from firing the injectors (and spark) until oil pressure has been built-up.