Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

knock sensor ?

Thread Tools
 
Search this Thread
 
Old Feb 11, 2013 | 11:34 PM
  #1  
01transampower's Avatar
Thread Starter
TECH Enthusiast
iTrader: (9)
 
Joined: Oct 2010
Posts: 690
Likes: 3
From: CO
Question knock sensor ?

Will the knock sensor going off cause the gas mileage to take a dive? I know what's setting mine off but just haven't had the time to fix it. The mileage I get out of a tank now has dropped and was wondering if that could cause it.
Reply
Old Feb 12, 2013 | 02:53 PM
  #2  
grim_ls1's Avatar
Staging Lane
 
Joined: Feb 2013
Posts: 62
Likes: 0
From: Tampa, Fl
Default

When spark knock is detected the Ecu backs off on timing until it goes away thus creating less power. It could affect mpg but I wouldn't think too much. What is causing the knock exactly, just curious
Reply
Old Feb 12, 2013 | 04:17 PM
  #3  
01transampower's Avatar
Thread Starter
TECH Enthusiast
iTrader: (9)
 
Joined: Oct 2010
Posts: 690
Likes: 3
From: CO
Default

Since i live in Colorado i have the sniffer test for emissions. Well my exhaust was true duals Two super cheap high flows 2 dynomax bullets and out the back. In oreder for me to get the car to pass had to put good cats. in the car. So I found a set on craiglslst out f an 06' gto. I cutthe old high flows out and put the gto oesin. The issue is they are big so I have low ground clearence and it is also vibrating across the underside of the floor and banging the floor so it's setting off the Knock sensor.

I plan on cuttng the cats. out but just no time and I was also thining about buying the tsp true duals or having a bunch of my exhaust reworked.
Reply




All times are GMT -5. The time now is 02:05 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 | 2026-06-09 14:55:56


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