u/Creepy_Fan_8652

▲ 4 r/1uz+1 crossposts

TLDR: having sync loss issues with cam vr signal on my non-vvti 1UZ 12 tooth + 1tooth cam on a Speeduino ECU,

hi guys im pretty new to the UZ world and i was hoping u guys could help me with an issue im having. ive got a 1UZ non-vvti with r8 coils and a speeduino ECU. the car turnes on fine and seems to run relatively okay but when i see the logs its constantly having sync losses (as u can see in the pictures) ive already tried flipping the polarity and the actual physical pins in the connector and they the signal gets worse, ive tried increasing the trigger filter, re-sync ON and OFF and my current set up is the only one that makes the car turn on and run but the sync loss # just keeps going up no matter what i do (green line in the chart).

i decided to ignore it but now im having issues with timing where i use the timing light and it says like -5 deg then i give it +15 deg and it jumps to +25 deg (yes i had timing locked at 10deg during all of this) , researched after the inconsistencies with the timing light and found out it might be because of the sync loss issue.

im pretty confused im new to the automotive world and im trying to learn with this project but i dont know where to go from here, ive seen lots off ppl say that their setup works jsut fine with the 12 teeth + 1 cam tooth and all that and that a 36-1 or 36-2 from another UZ is not needed but im really leaning towards that option because of the issues im having with the cam signal.

does anybody have advice? or maybe have had a similar issue and has solved it? if so how?

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u/Creepy_Fan_8652 — 1 month ago