LS1TECH - Camaro and Firebird Forum Discussion

PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Question: how to increase knock sensor sensitivity

Thread Tools
 
Search this Thread
 
Old Feb 28, 2008 | 09:43 AM
Share
  #1  
John_D.'s Avatar
John_D.
Thread Starter
TECH Fanatic
iTrader: (2)
 
Joined: Feb 2004
Posts: 1,315
Likes: 1
From: Lebanon TN
Default Question: how to increase knock sensor sensitivity
I don't have my laptop here with me, so I can't look up the specific table name. There are two tables that I remember. They have similar names, but in the help description (hptuners) one refers to a "threshold" and one refers to "gain".

The one that refers to gain, in the stock tune has all 4's in the lower map half, and all 1's in the upper map half. I had bumped the 1's up to 4's also, intending to increase the sensitivity when boosting. But I'm running a lot of timing and not getting any KR, so I need a cross-check on what I did.

Is the 4 more sensitive, or is the 1 more sensitive?

If it was a threshold, clearly the 1 would be. But since it's gain, seems like the 4 would be more sensitive.
Reply
0
Old Feb 28, 2008 | 11:54 AM
Share
  #2  
John_D.'s Avatar
John_D.
Thread Starter
TECH Fanatic
iTrader: (2)
 
Joined: Feb 2004
Posts: 1,315
Likes: 1
From: Lebanon TN
Default
The one I changed is called Global Gain. The one I left alone is called Level.

So more gain is more sensitive, right?
Reply
0
Old Feb 28, 2008 | 12:37 PM
Share
  #3  
7420NW7TH's Avatar
7420NW7TH
Banned
iTrader: (8)
 
Joined: Jan 2008
Posts: 164
Likes: 0
From: Houston
Default
I'd like to know this also
Reply
0
Old Feb 29, 2008 | 11:02 AM
Share
  #4  
John_D.'s Avatar
John_D.
Thread Starter
TECH Fanatic
iTrader: (2)
 
Joined: Feb 2004
Posts: 1,315
Likes: 1
From: Lebanon TN
Default
45 views, no comments?
Reply
0
Old Feb 29, 2008 | 12:32 PM
Share
  #5  
brad8266's Avatar
brad8266
TECH Senior Member
iTrader: (23)
 
Joined: Aug 2005
Posts: 8,797
Likes: 0
From: Watertown, NY
Default
Gain will change the sensitvity.
Reply
0
Old Feb 29, 2008 | 02:34 PM
Share
  #6  
John_D.'s Avatar
John_D.
Thread Starter
TECH Fanatic
iTrader: (2)
 
Joined: Feb 2004
Posts: 1,315
Likes: 1
From: Lebanon TN
Default
Originally Posted by John_D.
...I'm running a lot of timing and not getting any KR, so I need a cross-check on what I did.

Is the 4 more sensitive, or is the 1 more sensitive?

Cool.

So now I just need to know if I went in the right direction.

Because a lot of folks thought I was running too much timing under boost.
Reply
0
Old Mar 1, 2008 | 09:20 AM
Share
  #7  
John_D.'s Avatar
John_D.
Thread Starter
TECH Fanatic
iTrader: (2)
 
Joined: Feb 2004
Posts: 1,315
Likes: 1
From: Lebanon TN
Default
I got one response on the hptuners forum. There I was told that lower numbers in the "gain" table make the sensor more responsive. Does that sound correct?
Reply
0

Trending Topics

Old Mar 3, 2008 | 09:30 PM
Share
  #8  
John_D.'s Avatar
John_D.
Thread Starter
TECH Fanatic
iTrader: (2)
 
Joined: Feb 2004
Posts: 1,315
Likes: 1
From: Lebanon TN
Default
Anybody here that can second the opinion that a lower number in the gain table is more sensitive?
Reply
0
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-5

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-6

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Mar 3, 2008 | 09:47 PM
Share
  #9  
foff667's Avatar
foff667
LS1TECH Sponsor
iTrader: (2)
 
Joined: Jul 2003
Posts: 7,986
Likes: 3
From: Clermont, FL
Default
the higher the value the more desensitized it is.
Reply
0
Old Mar 3, 2008 | 09:58 PM
Share
  #10  
foff667's Avatar
foff667
LS1TECH Sponsor
iTrader: (2)
 
Joined: Jul 2003
Posts: 7,986
Likes: 3
From: Clermont, FL
Default
Also, I've gone ahead & added that description to our help file for the future.
Reply
0
Old Mar 4, 2008 | 07:28 AM
Share
  #11  
brad8266's Avatar
brad8266
TECH Senior Member
iTrader: (23)
 
Joined: Aug 2005
Posts: 8,797
Likes: 0
From: Watertown, NY
Default
Originally Posted by foff667
the higher the value the more desensitized it is.
I think I set mine all to 4, they are pretty much completely off.
Reply
0
Old Mar 4, 2008 | 10:01 AM
Share
  #12  
John_D.'s Avatar
John_D.
Thread Starter
TECH Fanatic
iTrader: (2)
 
Joined: Feb 2004
Posts: 1,315
Likes: 1
From: Lebanon TN
Default
Excellent, thanks for the info. This one has really been puzzling me...
Reply
0
Tags
Back to Subforum
PCM Diagnostics & Tuning
View Next Unread
Can Cam Surge Be Eliminated With Hp Tuners?




Advanced Search

All times are GMT -5. The time now is 05:20 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-04 18:13:20


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE