Finbarr Oconnor Posted July 21, 2011 Report Share Posted July 21, 2011 Hi we have been tunning my s54 running on a G4 with the latest firmware  I am getting huge trigger errors around 7500rpm and it seems to be causing a missfire, I have tried changing to crankshaft wring to a high quality item.I have played around with the filtering and arming voltages etc. When this is happening the rpm display goes orange then red... Quote Link to comment Share on other sites More sharing options...
Simon Posted July 22, 2011 Report Share Posted July 22, 2011 The best thing if possible would be a scope image of the trigger whilst the trigger errors are occurring. However is it a Silver case ECU? Quote Link to comment Share on other sites More sharing options...
npavlo Posted July 22, 2011 Report Share Posted July 22, 2011 I have the same issue. I have been working very closely with Neil Harvey (a US distributor) about this. Technical support has been very helpful, however the issue has not been fully resolved. Here is what I have done, Changed crank sensor gap Isolated wiring (EMI suspected) Installed suppressing resistors to limit excessive voltage Scoped trace with PicoScope at over 7000rpm (perfectly clean signal) Installed Autronics Reluctor Converter to change signal to digital Moved/replaced ignition module Installed latest firmware (as of 4.8.0 this was stated on the Vi-Pec site - · Increased BWM S54 Max RPM from 7900 to 9200 RPM. ) Swapped ECU (I have older ECUs that has internal drive by wire) No luck with anything. The crank trigger is a standard reluctor 60-2 setup that a lot of different engines don't seem to have an issue with. I am trying to go to 8600rpm with this one though. Has anybody on here experienced this issue with another engine perhaps? What was the fix? --- The car : https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/188577_10150105753482424_367584597423_6580092_1455516_n.jpg -Nick Quote Link to comment Share on other sites More sharing options...
Karim-Philip Antaki Posted July 28, 2011 Report Share Posted July 28, 2011 Hello guys, Â We have done 4 installs on a S54B32 engine ALL with the same problem at diff RPM and the solution we found was swiching the wires on the connections... are you using the original sensors ? Â Thanks ! KPA Quote Link to comment Share on other sites More sharing options...
npavlo Posted July 30, 2011 Report Share Posted July 30, 2011 Switching what wires? The polarity of the reluctor signal? Tried that despite my scope signal matched what was required originally. It was worse. Quote Link to comment Share on other sites More sharing options...
Karim-Philip Antaki Posted August 3, 2011 Report Share Posted August 3, 2011 Notice there were 3 wire sensors that were reluctors.  sig-grnd-shield  That might also be the problem.  KPA Quote Link to comment Share on other sites More sharing options...
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