- Tue Apr 20, 2021 8:31 pm
#49731
Hello everyone, I'm running a DIY EFI speeduino on the latest firmware on a 1.8 vvt mx5 engine using the stock cam trigger , 36-1 crank trigger and fully sequential fuel/spark.
I did have my Trigger Angle at +315 degrees, but the VVT would not function at all at this setting. I have moved the trigger to +90 degrees and the VVT has started working.
The issue that i have is that when the camshaft advances with an increase in duty as it should, the Cam angle in tuner studio is decreasing into the negative. (cam angle set to zero with zero duty)
I have tried changing the "increase duty direction" from advance to retard. This just sent it to full advance upon startup (still showing a negative value for the cam angle) and it would not try to correct if i gave it throttle to keep it running.
Is this a settings issue on my side or an issue further in the firmware?
I know that my vvt is physically functioning correctly as it was working on the stock mx5 cam and crank triggers. The issues have only arose after the switch to a 36 tooth crank trigger
msq attached, Ill try upload a video too
I did have my Trigger Angle at +315 degrees, but the VVT would not function at all at this setting. I have moved the trigger to +90 degrees and the VVT has started working.
The issue that i have is that when the camshaft advances with an increase in duty as it should, the Cam angle in tuner studio is decreasing into the negative. (cam angle set to zero with zero duty)
I have tried changing the "increase duty direction" from advance to retard. This just sent it to full advance upon startup (still showing a negative value for the cam angle) and it would not try to correct if i gave it throttle to keep it running.
Is this a settings issue on my side or an issue further in the firmware?
I know that my vvt is physically functioning correctly as it was working on the stock mx5 cam and crank triggers. The issues have only arose after the switch to a 36 tooth crank trigger
msq attached, Ill try upload a video too
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