UNISA JECS
07-27-2008, 02:30 PM
I wanna see how many members that tune there own ECU's (Calum/Nistune etc) have to say about the subject, do any of you disable your knock sensing flags or modify them?
I ask this because after doing soem datalogging its quite easy to see that sometimes the ECU well retard timing sometimes (I really doubt that im am truely knocking) as low as 8* a WOT and soemtimes not as much or none at all within side the flaged portions, once out of this flaged portion timing continues as prescribed on the map.
I'd also like to point out that I do have knock sesning enabled..duh.
I also looked at factory turbo'd timing maps in reguards to there flaged portions vs there NA counter parts and the SR20DET only flags knock up to 3200rpm whereas the NA SR20DE flags up to 4850rpm.
The NA KA24DE (like theres a turbo one from the factory lol) flags knock up to 4800rpm.
Im starting to think maybe there is just more noise on a turbocharged vehicle with regaurd to monitoring knock successfully hence the lack of upper rpm knock sensing of the SR20DET and VG30DETT.
Screen shots:
S13 KA24DE
http://i167.photobucket.com/albums/u159/zilvia_album/SP32-20080727-124740.gif
S13 SR20DE
http://i167.photobucket.com/albums/u159/zilvia_album/SP32-20080727-124638.gif
S13 SR20DET
http://i167.photobucket.com/albums/u159/zilvia_album/SP32-20080727-124936.gif
Z32 VG30DE
http://i167.photobucket.com/albums/u159/zilvia_album/VG30DE.gif
Z32 VG30DETT
http://i167.photobucket.com/albums/u159/zilvia_album/VG30DETT.gif
I ask this because after doing soem datalogging its quite easy to see that sometimes the ECU well retard timing sometimes (I really doubt that im am truely knocking) as low as 8* a WOT and soemtimes not as much or none at all within side the flaged portions, once out of this flaged portion timing continues as prescribed on the map.
I'd also like to point out that I do have knock sesning enabled..duh.
I also looked at factory turbo'd timing maps in reguards to there flaged portions vs there NA counter parts and the SR20DET only flags knock up to 3200rpm whereas the NA SR20DE flags up to 4850rpm.
The NA KA24DE (like theres a turbo one from the factory lol) flags knock up to 4800rpm.
Im starting to think maybe there is just more noise on a turbocharged vehicle with regaurd to monitoring knock successfully hence the lack of upper rpm knock sensing of the SR20DET and VG30DETT.
Screen shots:
S13 KA24DE
http://i167.photobucket.com/albums/u159/zilvia_album/SP32-20080727-124740.gif
S13 SR20DE
http://i167.photobucket.com/albums/u159/zilvia_album/SP32-20080727-124638.gif
S13 SR20DET
http://i167.photobucket.com/albums/u159/zilvia_album/SP32-20080727-124936.gif
Z32 VG30DE
http://i167.photobucket.com/albums/u159/zilvia_album/VG30DE.gif
Z32 VG30DETT
http://i167.photobucket.com/albums/u159/zilvia_album/VG30DETT.gif