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Knock detection / knock maps etc...

Posted: Sat Jun 18, 2011 5:02 am
by enohand
ok so i have a 1996 infiniti G20 (Nissan primera for you guys on the other side of the pond)

I have a constant knock sensor code, but i belive it is due to faulty sensor. i will be replacing it this weekend.

but i wanted to know if there was any indication i was rnning KNock maps..


when idling i get a few items on the left side of nistune higlighted in red, then when under load, almost (if not all) are red.... is this normal?

is it correct in thinking anything that is lighting up red is currently being used?

i will add more to this post as i can...im at work right now but wanted to start fishiing for info

Re: Knock detection / knock maps etc...

Posted: Sun Jun 19, 2011 1:30 am
by Matt
Yes any red (should be pink.... maybe I should pull the colouring back a tad or go for green instead) indicates map is used

Currently for this ECU there is no knock map detection to display if running regular or knock fuel / timing maps so I'm highlighting both on the meantime. Dare say that I must have missed this ECU when going through them all adding in the determination based on ECU knock map memory addresses (there are about 90 different ECU types...)

I've found the memory addresses and flags where knock maps get set and have added this for the next version. In the meantime if you watch your timing values against maptrace on the map you will be able to determine which one it is using if the maps are a number of degrees different in timing for example

Re: Knock detection / knock maps etc...

Posted: Sun Jun 19, 2011 7:38 am
by sssbassil
same az above, no dtc tho, just all red


1e000 u13

Re: Knock detection / knock maps etc...

Posted: Mon Jun 20, 2011 10:12 am
by PL
Hey Matt,

Yeah, a more subtle colour would be good. I used somebody else's laptop last week (running latest version) and I was wondering what all the red was about. Bit confusing - I was wondering if it was the orange that indicates that maps are empty.

Red is probably not a great choice cos when something goes red you kinda assume there's something wrong or something that requires your immediate attention.

Maybe a subtle green like you said? Or a subtle grey/blue like they use on this forum?? Colours for stuff like this can be deceptively hard to get right.

PL

Re: Knock detection / knock maps etc...

Posted: Mon Jun 20, 2011 2:51 pm
by Matt
- light blue is used to highlight comparison
- pink has now been changed to light green for map highlighting - not an 'alert' style colour
- orange used to indicate potentially empty maps
- red is used to indicate limits exceeded (eg TP gauge values > TP limit)

Re: Knock detection / knock maps etc...

Posted: Tue Jun 21, 2011 10:08 am
by Episode180
Nice. I used the latest version for the first time today and was wondering what red/pink colors were (actually thought it was something wrong). Thanks for the color code.

Re: Knock detection / knock maps etc...

Posted: Tue Jun 21, 2011 10:44 am
by Matt
No probs. Manual updates are long overdue but I need to finish software changes first. I'm also looking into improving the icon layout before doing that

Re: Knock detection / knock maps etc...

Posted: Wed Jun 22, 2011 12:51 am
by enohand
Matt wrote:Yes any red (should be pink.... maybe I should pull the colouring back a tad or go for green instead) indicates map is used

Currently for this ECU there is no knock map detection to display if running regular or knock fuel / timing maps so I'm highlighting both on the meantime. Dare say that I must have missed this ECU when going through them all adding in the determination based on ECU knock map memory addresses (there are about 90 different ECU types...)

I've found the memory addresses and flags where knock maps get set and have added this for the next version. In the meantime if you watch your timing values against maptrace on the map you will be able to determine which one it is using if the maps are a number of degrees different in timing for example

so are you stating that in the latest software version Knock deteciton should work? or do you mean on a newer revision of the RT board?

Re: Knock detection / knock maps etc...

Posted: Wed Jun 22, 2011 3:36 am
by nissangts
Matt wrote:Yes any red (should be pink.... maybe I should pull the colouring back a tad or go for green instead) indicates map is used

Currently for this ECU there is no knock map detection to display if running regular or knock fuel / timing maps so I'm highlighting both on the meantime. Dare say that I must have missed this ECU when going through them all adding in the determination based on ECU knock map memory addresses (there are about 90 different ECU types...)

I've found the memory addresses and flags where knock maps get set and have added this for the next version. In the meantime if you watch your timing values against maptrace on the map you will be able to determine which one it is using if the maps are a number of degrees different in timing for example
If this works then I will have no choice but to ditch .9.22 and jump right to .10.5 or .10.6 :D

Re: Knock detection / knock maps etc...

Posted: Wed Jun 22, 2011 12:02 pm
by Matt
I've found the memory addresses and flags where knock maps get set and have added this for the next version.
There are two knock detection reporting mechanisms
- Knock map determination (either fuel knock or timing knock map is being used)
- Knock count reporting (amount of knock per cell using special firmware modifications on the board to record this data and pass out through consult)

All ECUs have added knock map determination but only a small amount have knock count firmware modifications at this point