Have you measured when the injectors...

[Lex]

2 cylinders are up at the same time, 2 are down at the same time. Firing order is independent. They fire 1 3 4 2.

So while 1 is on the power stroke, 4 is on the intake stroke.

I need to know how many pulses BEFORE the missing teeth the injector fires. That will tell us when it happens in the intake stroke in degrees.

I also need to know if the injector starts firing EARLIER in the intake stroke as load is added to the motor or if start of firing is always the same number of crank teeth before the gap.

I would also like to know when the injection ends under maximum load. Does the injection end BEFORE the compression stroke or does it carry on through the compression stroke? Measure the falling edge of the injection command with respect to the missing tooth. The injection command should get wider and wider as load is added.

PM me your number and I can chat with you about it

[djuosnteisn]

Originally Posted by Lex 2 cylinders are up at the same time, 2 are down at the same time. Firing order is independent. They fire 1 3 4 2. So while 1 is on the power stroke, 4 is on the intake stroke. I need to know how many pulses BEFORE the missing teeth the injector fires. That will tell us when it happens in the intake stroke in degrees. I also need to know if the injector starts firing EARLIER in the intake stroke as load is added to the motor or if start of firing is always the same number of crank teeth before the gap. I would also like to know when the injection ends under maximum load. Does the injection end BEFORE the compression stroke or does it carry on through the compression stroke? Measure the falling edge of the injection command with respect to the missing tooth. The injection command should get wider and wider as load is added. PM me your number and I can chat with you about it

Your def right on the intake strokes, here's a pic super had:



tomorrow will be a good day of loading and hopefully a few races. I'll update when i haz mo infoz.