Small update to this never ending saga. Wiring - the bane of our existence, specifically GROUNDS. having issue with getting the new ECU integrated and engine operating. No ECU sync. Without this, dead in the water. The fellow who designed the new ECU has been helpful, but still no cigar. Noticed the other day that when I was trying to get a sync signal, that the CFI system would restart, dash would go into the startup sequence. The only way for this to happen is an interruption in the power circuit, primarily the ground side.
Research into this indicates that ECU grounding is critical to the final operation. Already knew this, but expected there to be no issues considering this is an FI engine. Expect that these new ECUs are not as forgiving as the OEM ECU is.
There are several YouTube videos that discuss ECU grounding and what needs to be done. An issue is you never know what or how the OEM wiring harness is configured with regard to ECU grounding.
The issue is to separate the grounds, sensor grounds are grounded through the ECU, all others should go to a common battery ground. This is needed to keep "dirty" grounds, injectors-coils, fans, VVT solenoids and such, from impacting on the sensor grounds that need a "clean" ground.
A quick check with the ECU disconnected from the wiring harness is to check for continuity between the main ECU ground and sensor grounds. If there is continuity, there is an apparent wiring issue and you need to find it. This is where I am presently.
Where to now, check wiring continuity and find the issue.
Will report back.
Research into this indicates that ECU grounding is critical to the final operation. Already knew this, but expected there to be no issues considering this is an FI engine. Expect that these new ECUs are not as forgiving as the OEM ECU is.
There are several YouTube videos that discuss ECU grounding and what needs to be done. An issue is you never know what or how the OEM wiring harness is configured with regard to ECU grounding.
The issue is to separate the grounds, sensor grounds are grounded through the ECU, all others should go to a common battery ground. This is needed to keep "dirty" grounds, injectors-coils, fans, VVT solenoids and such, from impacting on the sensor grounds that need a "clean" ground.
A quick check with the ECU disconnected from the wiring harness is to check for continuity between the main ECU ground and sensor grounds. If there is continuity, there is an apparent wiring issue and you need to find it. This is where I am presently.
Where to now, check wiring continuity and find the issue.
Will report back.