All Motor All Motor Advanced Performance. Talk about Engine Swaps, Internal Engine work. Not your basic Y pipe and Intake Information.
Sponsored by:
Sponsored by: CARiD

SAFCII owners: ur knock count?

Thread Tools
 
Search this Thread
 
Old Aug 21, 2005 | 11:55 PM
  #1  
jcy98maxse's Avatar
Thread Starter
Turbo is too much fun!
iTrader: (8)
 
Joined: Apr 2002
Posts: 2,515
Post SAFCII owners: ur knock count?

For all of you guys with SAFCII, what does the knock signal correction do? I had mine for quite some time but only til recently did I hook up my knock signal.
what are ur readings for the knock level? I have no idea what numbers I should be getting or if they are good or bad but here are some of my numbers: Today: high temp was mid 90s
Startups idle: 0
after driving for about hr or more:
-when idle reading goes from 10-46
-when driving the reading goes down...
-46 was the highest i got only in the mid afternoons with ac on.

In my settings, my RPM1 is 31 @1600 and RPM2 39@3350.
anyone have a clue?
Old Aug 22, 2005 | 01:25 AM
  #2  
I30tMikeD's Avatar
Moderator who thinks he is better than us with his I30
iTrader: (8)
 
Joined: May 2002
Posts: 9,332
The process of the settings is just to kinda calibrate it.

Mine seems to be fairly reliable. You really shouldn't get anything above 10 at idle. I get 4-6 at idle if the car is heat soaked and it is hot outside.

I would not be concerned about anything below 50. I have seen as high as 250, but still not heard any knock.

I know mine works because it I get an increased reading when I should be, ie; more boost on stock timing, hot weather, running leaner.

When temps change through the seasons you should recalibrate the SAFC knock feature.
Old Aug 22, 2005 | 05:53 AM
  #3  
Jime's Avatar
Banned
iTrader: (10)
 
Joined: Jan 2002
Posts: 4,919
From: https://t.me/pump_upp
From all I have learned the knock sensor function on the SAFCII does not work properly on an OBDII vehicle. It does give a reading but its meaningless.

Mine just keeps getting higher and higher the longer I drive, it does vary but the maximum reading just keeps going up.

The info about the OBDII vs OBDI I got from a DSM site.
Old Aug 22, 2005 | 08:20 AM
  #4  
I30tMikeD's Avatar
Moderator who thinks he is better than us with his I30
iTrader: (8)
 
Joined: May 2002
Posts: 9,332
Originally Posted by Jime
From all I have learned the knock sensor function on the SAFCII does not work properly on an OBDII vehicle. It does give a reading but its meaningless.

Mine just keeps getting higher and higher the longer I drive, it does vary but the maximum reading just keeps going up.

The info about the OBDII vs OBDI I got from a DSM site.


hmmm....mine doesn't to that at all. On a very hot day in stop in go traffic I can see it rise from like 2-3 to 15-20 as I get into the throttle. Anything below 75 degrees I hardly ever get a reading. Mine definately responds how one would think it would if small amounts of knock were present.
Old Aug 30, 2005 | 07:27 PM
  #5  
maxmale's Avatar
Senior Member
 
Joined: Sep 2002
Posts: 1,383
i read a 0 at all times. i suppose this is a good thing. that or it means the basturds never hooked up the signal. huh, they said they did.
Old Aug 30, 2005 | 07:42 PM
  #6  
SR20DEN's Avatar
VQ Wizard
iTrader: (7)
 
Joined: May 2002
Posts: 6,661
From: Charlotte, NC
Originally Posted by Jime
From all I have learned the knock sensor function on the SAFCII does not work properly on an OBDII vehicle. It does give a reading but its meaningless.

Mine just keeps getting higher and higher the longer I drive, it does vary but the maximum reading just keeps going up.

The info about the OBDII vs OBDI I got from a DSM site.

This is why I keep telling everyone to not waste their time connecting it.

Mine just reads zero the whole time.
Old Aug 31, 2005 | 02:57 PM
  #7  
harmbone2k2's Avatar
6yrs old=36,500 miles :)
iTrader: (1)
 
Joined: Aug 2003
Posts: 791
From: Wichita, Kansas
I am the same as SR20DEN, Mine stays at 0.
Old Sep 1, 2005 | 07:07 AM
  #8  
I30tMikeD's Avatar
Moderator who thinks he is better than us with his I30
iTrader: (8)
 
Joined: May 2002
Posts: 9,332
I know mine works. I get logical reading in conditions that would cause some knock but I also get a steady 0 in conditions that would not. I could easily see an NA car that does not have heat issues gettting a reading of 0 most of the time.
Old Sep 14, 2005 | 05:51 PM
  #9  
HarrisH's Avatar
Supporting Maxima.org Member
iTrader: (1)
 
Joined: Nov 2002
Posts: 1,721
I just got it installed today, cool thing yet I do not know much of how to set it to optimal settings. Guess I have to wait till I dyno tune. I highly doubt that you guys who are always at 0 have the knock feature installed. Mine ranges from 0-12. At idle with A/C on it can be 7-10. Driving usually is between 0-3.
Old Sep 15, 2005 | 04:33 PM
  #10  
sean05's Avatar
Senior Member
iTrader: (13)
 
Joined: Aug 2003
Posts: 2,760
i want 1...
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
DC_Juggernaut
7th Generation Maxima (2009-2015)
4
Sep 28, 2015 04:07 PM
ac max 92
3rd Generation Maxima (1989-1994)
3
Sep 17, 2015 07:35 AM
ballerchris510
5th Generation Maxima (2000-2003)
6
Sep 11, 2015 05:29 PM




All times are GMT -7. The time now is 03:35 AM.