zha50 Posted November 24, 2020 Report Share Posted November 24, 2020 Hi Guys! Recently patched in a Link G4+ Fury into a M54 engine. Most things running well now with a ball park road tune and transfer of maps from the BMW ECU. The engine is the later model with 2x Hall Effect CMP and 1x 60-2 CKP. I have configured my triggers with a Multi-tooth/Missing setup and is running well. Recently I have been playing around with the VVTi / Cam control and seeing how it behaves, and I am having some issues, which could be a combination of setup AND possiblly old/bad phasor seals. Trying to eliminate the former and that the VVT setup in the ECU is OK. For now, I am working on getting good control of the intake cam, however most settings see the CAM position move in 10 degreee jumps, casuing rather erratic changes in VE and the control loop struggles with such poor positional feedback. I have used quite aggressive P values just to get the system to show movement, so there definitely needs tuning once the setup / trigger questions are worked though. I have attached my map, as well as a quick log to show the issues. RPM lockout was rasied above redline after testing, so ignore the 8000RPM lockout UBC337_G4_Fury_0.0.33-lockoutVANOS.pclr Log 2020-11-24 2;09;52 pm-slowVanos.llg Quote Link to comment Share on other sites More sharing options...
Adamw Posted November 24, 2020 Report Share Posted November 24, 2020 You should be using the M52 trigger mode and M52 vvt mode. With the multitooth/missing and user defined VVT mode you are using you are only getting one position update from the camshaft every 720 degs (ie one tooth). With the M52 mode it uses both the rising and falling edges of the cam wheels so it gets two updates. Quote Link to comment Share on other sites More sharing options...
zha50 Posted November 24, 2020 Author Report Share Posted November 24, 2020 Hi Adam, Cheers for the fast response. I will re configure the trigger 1 to M52 mode and recheck timing then look at the cam stuff again. Thanks ! Will. Quote Link to comment Share on other sites More sharing options...
zha50 Posted November 24, 2020 Author Report Share Posted November 24, 2020 8 hours ago, Adamw said: You should be using the M52 trigger mode and M52 vvt mode. With the multitooth/missing and user defined VVT mode you are using you are only getting one position update from the camshaft every 720 degs (ie one tooth). With the M52 mode it uses both the rising and falling edges of the cam wheels so it gets two updates. Well that certain made all the difference for the intake cam. Cam angle test now shows with 2 pulses a ~282 and ~640 angle, and intake cam postion is being calculated nicely. However now trying to move the exhaust cam just to prove out (as exh phasing does not have as much effect as intake), theres always a "missing pluse" error, and cam angle test only shows 1 value, regardless of number of test pulses. Any hints for the exhaust cam setup? It will be more a setup trial as a T25 on a 2.5L doesn't really need much mid range cam phasing to get it going. The long term goal is still to retain dual VVTi on a 3.0L and GT3586, so this will prove as a setup / debugging platform / base tune. Regards, Will. Quote Link to comment Share on other sites More sharing options...
Adamw Posted November 24, 2020 Report Share Posted November 24, 2020 I think you have found a bug in the Exhaust cam position. I get a similar error when testing with a simulator. I suspect it has always been like that and either no one has used it or no one has noticed. Not a very popular engine for whatever reason... So I dont have an immediate fix for you sorry. I will pass it on to engineering to take a look, but it may take some time to fix as they are only devoting limited time to G4+ at present. Quote Link to comment Share on other sites More sharing options...
Adamw Posted November 25, 2020 Report Share Posted November 25, 2020 I was just going to write this up as a task and I found someone else has already reported the problem a couple of months ago so it is on the to do list already. It appears this bug is recently introduced and in older firmwares the M52 exhaust cam works correctly. Below I have attached firmware 5.6.6 which seems to be the last one before it stopped working. So give this a try for your test in the meantime and hopefully it will be properly fixed by the time you need it. Firmware 5.6.6.3604.LFM Quote Link to comment Share on other sites More sharing options...
zha50 Posted November 25, 2020 Author Report Share Posted November 25, 2020 Excellent. Thanks Adam for the great support! More likely than not, guys who move over to a standalone trade off the dual VVTi in the M54 to a single VVTi on a iron block M52. I will load up the older firmware and give the settings a go and see how cam position detection tracks. It won't be a huge loss not having a advanced exhaust cam and won't be able to tune this setup on a dyno to properly get the best advances regardless. Quote Link to comment Share on other sites More sharing options...
Dilyn Gray Posted April 2 Report Share Posted April 2 Do you have m54 vanos activation tables I could look at? I'm finally done with the intercooler and v3si supercharger on my m54 e36. Quote Link to comment Share on other sites More sharing options...
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