Notices
ECU Flash

Knock Tables

Thread Tools
 
Search this Thread
 
Old Dec 6, 2010, 05:50 PM
  #1  
Evolving Member
Thread Starter
iTrader: (14)
 
EvoPower81's Avatar
 
Join Date: Dec 2009
Location: New York
Posts: 362
Likes: 0
Received 0 Likes on 0 Posts
Knock Tables

Hey tuners can you tell me if you guys consider the stock knock tables too sensitive?. In what situations other than false knock from engine harmonics do you adjust the tables and actually make more power from the tune?
Old Dec 6, 2010, 06:27 PM
  #2  
Evolved Member
iTrader: (10)
 
Raptord's Avatar
 
Join Date: Mar 2009
Location: Gatineau, Quebec, Canada
Posts: 3,525
Received 19 Likes on 14 Posts
I don't think the stock knock tables would be too sensitive on a stock motor. Unless you have aftermarket internals, you normally shouldn't have to mess around with those tables.

False knock is the only reason you want to adjust them; a knocking engine won't make more power than one that is properly tuned to not knock, and even if it does, if the ECU isn't adjusting the timing to keep the knock under control, it'll only have that extra power until something goes boom...
Old Dec 6, 2010, 06:32 PM
  #3  
Newbie
iTrader: (13)
 
naplesevo's Avatar
 
Join Date: Aug 2010
Location: Midwest
Posts: 63
Likes: 0
Received 0 Likes on 0 Posts
yes sometimes you can have an overly sensitive knock sensor and if so you can always turn it down a little but never to much after all it is there for a reason
Old Dec 6, 2010, 06:53 PM
  #4  
Former Sponsor
iTrader: (22)
 
tscompusa2's Avatar
 
Join Date: Oct 2005
Location: pa
Posts: 5,375
Likes: 0
Received 7 Likes on 7 Posts
what cams do you have ?
Old Dec 6, 2010, 10:41 PM
  #5  
Evolving Member
Thread Starter
iTrader: (14)
 
EvoPower81's Avatar
 
Join Date: Dec 2009
Location: New York
Posts: 362
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by tscompusa
what cams do you have ?
JUN 272. BTW I not trying to suggest this might be the case with my car or tune Im just curious to find out what conditions one would adjust their tables.
Old Dec 7, 2010, 08:02 AM
  #6  
Newbie
 
Andy_8's Avatar
 
Join Date: Jul 2007
Location: UK
Posts: 63
Likes: 0
Received 0 Likes on 0 Posts
Everytime i go to my tuner to get tuned i lift the knock threshold line out of the way by raising the multipliers, let him do his thing on Det cans and then drop the multipliers back down until i start to see 1 or 2 counts. I then know i have a sweet tune and knock protection from the ECU in the event of bad fuel or unusual load.

Built engine

Andy
Old Dec 7, 2010, 09:50 AM
  #7  
Evolving Member
Thread Starter
iTrader: (14)
 
EvoPower81's Avatar
 
Join Date: Dec 2009
Location: New York
Posts: 362
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Andy_8
Everytime i go to my tuner to get tuned i lift the knock threshold line out of the way by raising the multipliers, let him do his thing on Det cans and then drop the multipliers back down until i start to see 1 or 2 counts. I then know i have a sweet tune and knock protection from the ECU in the event of bad fuel or unusual load.

Built engine

Andy
Is the knock tables reset to stock after? If so , you could have left them in the first place as they would have been working accurately I guess
Old Dec 7, 2010, 10:18 AM
  #8  
Evolved Member
iTrader: (16)
 
crewdawg130's Avatar
 
Join Date: Jan 2007
Location: Fayetteville, NC via Puerto Rico
Posts: 691
Likes: 0
Received 0 Likes on 0 Posts
Det cans FTW. Specialy on built engines
Old Dec 7, 2010, 10:51 AM
  #9  
Evolved Member
iTrader: (51)
 
LGshow19's Avatar
 
Join Date: Feb 2010
Location: San Antonio
Posts: 1,640
Likes: 0
Received 0 Likes on 0 Posts
what are DET cans?(detonation)?
Old Dec 7, 2010, 10:54 AM
  #10  
Former Sponsor
iTrader: (22)
 
tscompusa2's Avatar
 
Join Date: Oct 2005
Location: pa
Posts: 5,375
Likes: 0
Received 7 Likes on 7 Posts
headphones with a mic attached to the block to pickup "pinging"
Old Dec 7, 2010, 10:56 AM
  #11  
Former Sponsor
iTrader: (22)
 
tscompusa2's Avatar
 
Join Date: Oct 2005
Location: pa
Posts: 5,375
Likes: 0
Received 7 Likes on 7 Posts
Originally Posted by EvoPower81
JUN 272. BTW I not trying to suggest this might be the case with my car or tune Im just curious to find out what conditions one would adjust their tables.
Not sure. Ive had phantom knock on my 2.3L, but i was on e85 so much easier to adjust the knock filter settings safer on a high octane fuel to confirm it is indeed false knock detection.

to answer your question; you adjust the knock MULTIPLIER tables.
Old Dec 7, 2010, 07:37 PM
  #12  
Newbie
 
Andy_8's Avatar
 
Join Date: Jul 2007
Location: UK
Posts: 63
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by EvoPower81
Is the knock tables reset to stock after?
No, but enough to provide safety cover just infront of the tune.

I would be horrified if a tuner was not using det cans when he tuned my car. Infact if he wasn't he would not be tuning it and i would be going back.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Bob_tm
ECU Flash
3
Jan 5, 2018 04:45 AM
Smogrunner
ECU Flash
63
Jun 26, 2017 03:54 PM
Rado_93
Evo X Engine Management / Tuning Forums
1
Oct 23, 2015 11:48 AM
jcsbanks
ECU Flash
350
Jun 21, 2013 03:29 PM
AIK
Evo X Engine Management / Tuning Forums
10
Sep 13, 2010 02:48 PM



Quick Reply: Knock Tables



All times are GMT -7. The time now is 05:56 AM.