b2 stft question, log attached
03-14-2018, 08:47 PM
#1
Staging Lane
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b2 stft question, log attached
Have a friend helping me with some basic remote tuning and now learning along the way. Several Questions:
1) B2 STFT seems like it pulls often in a strange way, even at idle. Why would this be? Leaky injector? Vacuum leak? we resealed the whole lq4 before installation. any insight as to if this is normal is appreciated.
2) Knock...I have read all stickies more than once on multiple forums and understand detonation and pre ignition. any insight how to fix the little bit of KR seen at mutiple locations on log? how severe is the amount seen? insights?
3) timing pulsing up and down at idle. I did read about this but am not 100% on fix.
4) Any more general insights would greatly be appreciated. yes wideband not hooked up. working on it, will report back.
5) did I log a decent enough amount of data to get good info to look at?
1) B2 STFT seems like it pulls often in a strange way, even at idle. Why would this be? Leaky injector? Vacuum leak? we resealed the whole lq4 before installation. any insight as to if this is normal is appreciated.
2) Knock...I have read all stickies more than once on multiple forums and understand detonation and pre ignition. any insight how to fix the little bit of KR seen at mutiple locations on log? how severe is the amount seen? insights?
3) timing pulsing up and down at idle. I did read about this but am not 100% on fix.
4) Any more general insights would greatly be appreciated. yes wideband not hooked up. working on it, will report back.
5) did I log a decent enough amount of data to get good info to look at?
03-15-2018, 04:47 PM
#3
I can't view the log, it opens to a black page for whatever reason.
A simple test on the sensor would be to just swap them side to side to make sure it's not the sensor itself that is the cause. But if it did start doing it on bank 1, then it's going to be a sensor issue.
A simple test on the sensor would be to just swap them side to side to make sure it's not the sensor itself that is the cause. But if it did start doing it on bank 1, then it's going to be a sensor issue.
03-15-2018, 11:54 PM
#4
Have a friend helping me with some basic remote tuning and now learning along the way. Several Questions:
1) B2 STFT seems like it pulls often in a strange way, even at idle. Why would this be? Leaky injector? Vacuum leak? we resealed the whole lq4 before installation. any insight as to if this is normal is appreciated.
2) Knock...I have read all stickies more than once on multiple forums and understand detonation and pre ignition. any insight how to fix the little bit of KR seen at mutiple locations on log? how severe is the amount seen? insights?
3) timing pulsing up and down at idle. I did read about this but am not 100% on fix.
4) Any more general insights would greatly be appreciated. yes wideband not hooked up. working on it, will report back.
5) did I log a decent enough amount of data to get good info to look at?
1) B2 STFT seems like it pulls often in a strange way, even at idle. Why would this be? Leaky injector? Vacuum leak? we resealed the whole lq4 before installation. any insight as to if this is normal is appreciated.
2) Knock...I have read all stickies more than once on multiple forums and understand detonation and pre ignition. any insight how to fix the little bit of KR seen at mutiple locations on log? how severe is the amount seen? insights?
3) timing pulsing up and down at idle. I did read about this but am not 100% on fix.
4) Any more general insights would greatly be appreciated. yes wideband not hooked up. working on it, will report back.
5) did I log a decent enough amount of data to get good info to look at?
Create a histogram to monitor knock over time. If you are picking up KR over the same cell multiple times, then you may want to reduce the timing there. Also disable burst knock as it will show up as KR.
Depending on cam size and timing correction, this may be normal.
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