TC951 Posted September 10, 2021 Report Share Posted September 10, 2021 Hello, While setting up normalized knock control I started by checking a few steady state areas to see how the system behaved. I noticed that when holding the engine at 2k rpm at full load (~112kpa) the Knock Load Status changed to "Changing Load" and remained there until I removed load. During this time it applied my Load Delta Threshold Gain, even though the MAP Delta Level had not been met... I'm not sure that this is intended operation? Can someone confirm? These are my relevant settings: PC Datalog - 2021-09-9 5;39;10 pm_KnockSetupNormalized_LoadStatusinBoost.llgx k fuku 1 Quote Link to comment Share on other sites More sharing options...
Vaughan Posted September 10, 2021 Report Share Posted September 10, 2021 Looking at your log it looks like it's because of the MAP Delta, remember that PCLink logs will miss data points on anything fast moving compared with ECU logs which can log at a much higher and more consistent rate. There are options to filter the MAP, TPS and Engine Speed ROC/Delta values for the purpose of the Knock Control function if you want more stable values. Quote Link to comment Share on other sites More sharing options...
TC951 Posted September 10, 2021 Author Report Share Posted September 10, 2021 Oh duh. Yea looking at that Knock MAP Delta channel it is quite noisy. Suppose I will filter it. Thanks for the quick sanity check. Vaughan 1 Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 10, 2021 Report Share Posted September 10, 2021 Also, there is a dedicated "Knock MAP Delta" channel, this is the MAP delta with the filtering applied, so this is the best channel to look at when fine tuning that filter and delta level. For reference I've got the Knock MAP delta filter set at 10Hz in our subaru test car. Quote Link to comment Share on other sites More sharing options...
Warchild Posted October 5, 2021 Report Share Posted October 5, 2021 Adam, what version subaru sti do you guys have? can you share your pclx file with me please ? On 9/10/2021 at 6:07 AM, Adamw said: Also, there is a dedicated "Knock MAP Delta" channel, this is the MAP delta with the filtering applied, so this is the best channel to look at when fine tuning that filter and delta level. For reference I've got the Knock MAP delta filter set at 10Hz in our subaru test car. Kindly share your pclx (map) file with me, what year model or version sti do you have ? Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 5, 2021 Report Share Posted October 5, 2021 Our test car is a JDM sti GRB. Map attached is a bit old but the only one I have that will open with public PC Link. I dont remember any major changes to the tune since then. WRX V11 Rev5.6.pclx Quote Link to comment Share on other sites More sharing options...
Warchild Posted October 6, 2021 Report Share Posted October 6, 2021 9 hours ago, Adamw said: Our test car is a JDM sti GRB. Map attached is a bit old but the only one I have that will open with public PC Link. I dont remember any major changes to the tune since then. WRX V11 Rev5.6.pclx 436.82 kB · 2 downloads Sorry Adam, I need the G4+ format please ! Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 6, 2021 Report Share Posted October 6, 2021 G4+ doesnt have normalised knock mode. Quote Link to comment Share on other sites More sharing options...
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