kpbruka Posted July 26, 2021 Report Share Posted July 26, 2021 Hello, So I have noticed some problems where my RPM limit seems to be kicking in around 6000rpm where as the actual limit is set to 6700. I did see there were some trigger errors popping up right around that same RPM so I ran the trigger scope at idle and 5000rpm(ish) There does seem to be a wide gap in the one set of trigger gaps which I am unsure as to why. The flywheel is aftermarket so it seems the trigger wheel has been made slightly different from OEM. Is there any settings in which might solve my issues? or does it seem like i'll be stuck having to return to OEM flywheel? I attached the scope logs and a driving log to show the RPM limiter kick on. Thanks for any help! 5000RPM.llg Idle RP 5000RPM.llg Idle RPM.llg rpm cut early.llg Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 26, 2021 Report Share Posted July 26, 2021 None of your attachments are reachable. Can you try again. Quote Link to comment Share on other sites More sharing options...
kpbruka Posted July 26, 2021 Author Report Share Posted July 26, 2021 Just reattached files. Looks like they should work now. I forgot to save the tune to my PC however all the trigger related settings are the default 350z basemap. Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 26, 2021 Report Share Posted July 26, 2021 Yeah it is a bit odd that one tooth on the flywheel that is longer than the rest. It looks like the falling edge is still in about the right spot though so it shouldnt matter provided it is consistant. It may be some damage on that tooth or possibly some runout or air gap not quite right etc. Can you try it with trigger 1 pull-up turned off to see if that makes any difference. Quote Link to comment Share on other sites More sharing options...
kpbruka Posted July 27, 2021 Author Report Share Posted July 27, 2021 Thanks for the reply, Just tried with Trig 1 Pull-up turned off and it didn't seem to have any effect. Still ran into trigger issues around 6K. With it not seeming to change anything is there a recommended setting to leave it at? Just return to default "On" ? I notice the default for trigger 1 filtering is level 2. Is there any potential harm in trying a lower or higher level? When I am able to I'll try and get under the car and see if its possible to inspect the trigger ring and see if there is noticeable damage or perhaps a manufacture error. Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 27, 2021 Report Share Posted July 27, 2021 Yes you can try adjusting filtering. I havent seen level 2 cause any issues with any common tooth count before. Level 3 with high tooth counts starts to filter out teeth but I think it would be fine with this trigger. It wouldnt hurt to do a cam angle test to confirm your VVT offsets are correct as well. I notice in your log the inlet cams "top out" at 34deg when commanding 40 which suggests they are hitting the mechanical stops so must be way more advanced than that. Quote Link to comment Share on other sites More sharing options...
kpbruka Posted July 27, 2021 Author Report Share Posted July 27, 2021 I will give Level 3 a shot here shortly. Also I never noticed that before on the VVT command vs actual angle. Will also try and do the cam angle test while I am in there. Just doing the cam test, I noticed there is only a single digital input regarding the intake cams.And dual inputs for exhaust(dont have them as its a DE non revup) What would be the procedure for adjusting offset in that case? Quote Link to comment Share on other sites More sharing options...
kpbruka Posted July 28, 2021 Author Report Share Posted July 28, 2021 So an update on my findings: Regarding the cams, I found the second cam offset setting in "trigger 2" . As that bank shares the same signal will updating that value altered anything else due to it being the sync pulse? Also I found Level 3 filtering resulted in pretty consistent trig 1 errors. So I tried going the other direction and tested out Level 1. Seemed to not show any trigger errors and also was able to reach the proper rpm limit. I have attached a log from the neutral tests. I will try some driving around and check how the VVT looks after the Cam Angle Test update. idle rev limit test okish.llg Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 28, 2021 Report Share Posted July 28, 2021 2 hours ago, kpbruka said: As that bank shares the same signal will updating that value altered anything else due to it being the sync pulse? Yes, it tells the ecu where the cam home position is. If it is significantly wrong then the cam could be at a much different angle than is being reported. It would have to be miles out to effect the phase sync, but with an aftermarket flywheel it is not something I would rule out right away. Quote Link to comment Share on other sites More sharing options...
kpbruka Posted July 28, 2021 Author Report Share Posted July 28, 2021 I'm not to sure what would be considered significant in these regards but after running the cam angle test the L/H cam went from 157.0 to 160.8 and the R/H cam went from 37.5 to 40.4. Looking at a log from my drive home the cams are maxing out just over 37 deg now after the updated offsets. Didn't get a chance to test out if I can hit the RPM limiter at the correct RPM while driving. But the results from stationary revving has me hopeful. Quote Link to comment Share on other sites More sharing options...
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