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jayecu v0.3.28
Firmware 0.4.20 (build 26e7bc4)
- Trigger inputs use only the edges selected in Edge. A pulse-width cam (the 2JZ / 1JZ front or rear cam, and every
"+ cam" wheel) used to capture both edges whatever Edge said, and timed itself from the pulse's closing edge.
On a VR input that edge is where the signal crosses a threshold re-armed from the last pulse, so it moves with
every change of speed and comes late after a weaker pulse. A quick stab through the cam's phase-sync rpm read
that as a cam that hadn't arrived: phase lost (P0341), a moment on wasted spark, then a re-sync. Now:- With Edge on Rising or Falling, only that edge is captured, and each one is the cam's reference. On a VR
input that's the zero crossing, which sits on the tooth. WIDTH min/max don't apply. - With Edge on Both, the width is measured and picks out the reference, which is timed from the rising edge.
The VVT angle is measured at the same edge.
- With Edge on Rising or Falling, only that edge is captured, and each one is the cam's reference. On a VR
- VVT cam angles (VVT Cam 1-4 Advance) are published in degrees. They were in tenths of a degree, so a cam 4.3°
from nominal read 43°, and cam control would have closed its loop on a value ten times too large.
Studio 0.3.28
- The trigger Edge setting and the WIDTH min/max help explain that only the selected edges are captured, and that a Width cam on Rising or Falling takes every selected edge as its reference.
- Manual: the trigger chapter describes the Edge rule and why a VR cam must be on Rising.
Firmware kits for jaytek_v1 and proteus_f7.