Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

car gets too much knock

Thread Tools
 
Search this Thread
 
Old Aug 22, 2003 | 12:14 AM
  #1  
smokin5s's Avatar
Thread Starter
Registered User
 
Joined: Jul 2000
Posts: 157
From: Columbus, Ohio
car gets too much knock

ok, I had a buddy look at my program today on my car.... I guess I was getting knock somewhere because my timing was advanced... and it was advancing my timing farther. He pulled some timing, and disabled my Knock Sensor... he was saying running NA that should be fine, but does anyone know if that will hurt anything if I'm running N2O? Will the LT4 KM help much? What causes Knock?
How do I make my KM not as sensative?
What is "fast attack rate vs rpm" table?

Last edited by smokin5s; Aug 22, 2003 at 12:17 AM.
Old Aug 22, 2003 | 12:25 AM
  #2  
atljar's Avatar
Registered User
 
Joined: Feb 2001
Posts: 3,068
From: Cincinnati, Ohio
Ok, the computer was pulling anywhere from 3-12* of timing at high map and rpms. I took out a couple degrees of timing (used the chart i created for my cam), and also disabled the knock sensor. I am convinced that the knock was false, but told josh to run some 100 octane through before uploading new program to see if the knock re-occurs. If it does, its false.

I assume there is a table to lessen the onset of timing retard. Is it the attack rate table? That was my guess but am not sure.

He and i both agree that with n20, he would be better off with the knock sensor working, yet am not sure how to get rid of any false knock without going lt4 KM or resistor trick. Ideas/comments?
Old Aug 22, 2003 | 03:25 PM
  #3  
m0nk's Avatar
Registered User
 
Joined: Apr 2003
Posts: 442
From: Long Island, NY
Is the SES light on? I was getting a $hitload of knock because my sensor was shot... On the other hand I replaced it, and now im constistantly getting knock between 2000-2000 everytime I go thru that RPM range in WOT. I have an 8.3:1 compression and usually run 87, so pulled back a few * and put in 93... the knock was still there so for somereason im getting false knock in that RPM range.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
SpeedJunkee
Parts For Sale
4
Jan 27, 2015 10:02 PM
jayblev95
LT1 Based Engine Tech
12
Dec 1, 2014 06:55 AM
USAirman93
General 1967-2002 F-Body Tech
4
Nov 24, 2014 03:37 PM
IgorT.455/406
LT1 Based Engine Tech
31
Feb 1, 2005 06:18 AM
Lions3
LT1 Based Engine Tech
20
Apr 11, 2003 10:55 AM




All times are GMT -5. The time now is 07:08 AM.