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

How does a QTP Cutout work?

Thread Tools
 
Search this Thread
 
Old Apr 20, 2005 | 12:12 PM
  #1  
2KThunder's Avatar
Thread Starter
TECH Fanatic
iTrader: (4)
 
Joined: May 2003
Posts: 1,670
Likes: 0
From: San Marcos, TX
Default How does a QTP Cutout work?

More specifically the switch. The site says its a toggle, so wouldnt that mean its eitehr a. open or b. closed? The site says you can run it open, closed, or anywhere inbetween. Im curious as to how you make it 'inbetween'. Im getting an LS1, and I think instead of getting a loudmouth, i'll get a quieter muffler and a cutout, so it can be really loud, or nice and quiet, and I have a Thunder Racing credit, and they sell the QTP CO. Thanks.
Reply
Old Apr 20, 2005 | 12:50 PM
  #2  
bowtieman81's Avatar
TECH Fanatic
iTrader: (35)
 
Joined: Sep 2004
Posts: 1,660
Likes: 0
From: Maryland/Illinois
Default

The cutout is powered by a small DC motor, and the switch basically tunrs the motor on (forward of backwards) and off. You can run the cutout totally closed, open, or anywhere in between. All you do is depress the switch until the cutout moves where you want it. Really though, you will likely have it either all open or all closed. Having it part way open doesn't really make it noticeably quieter compared to all the way open. Hope that helps.
Reply
Old Apr 20, 2005 | 12:56 PM
  #3  
2001NBMZ28's Avatar
TECH Senior Member
 
Joined: Dec 2001
Posts: 5,398
Likes: 3
From: Jacksonville, FL
Default

It's a "momentary" switch - so when you take your finger off it stops the motor at whatever position it's in, and returns to the "center" position.
Reply
Old Apr 20, 2005 | 01:02 PM
  #4  
2KThunder's Avatar
Thread Starter
TECH Fanatic
iTrader: (4)
 
Joined: May 2003
Posts: 1,670
Likes: 0
From: San Marcos, TX
Default

Ah I see, So its 100% revolving? Or does it stop all the way open and stop all the way closed?
Reply
Old Apr 20, 2005 | 01:15 PM
  #5  
2001NBMZ28's Avatar
TECH Senior Member
 
Joined: Dec 2001
Posts: 5,398
Likes: 3
From: Jacksonville, FL
Default

You have to stop it (let go of the switch) when it's open/closed - you'll be able to tell by the sound.
Reply
Old Apr 20, 2005 | 01:50 PM
  #6  
KrazyDan's Avatar
TECH Fanatic
 
Joined: Jan 2003
Posts: 1,415
Likes: 1
From: San Diego/Schertz,Texas
Default

Originally Posted by 2KThunder
Ah I see, So its 100% revolving? Or does it stop all the way open and stop all the way closed?
is this why you hear of them breaking sometimes? when people keep closing when its already closed?
Reply
Old Apr 20, 2005 | 02:37 PM
  #7  
LS69TA's Avatar
TECH Veteran
iTrader: (30)
 
Joined: Jan 2003
Posts: 4,391
Likes: 0
From: Texarkana, Tx
Default

It'll make the motor die on you alot sooner. You can tell when it's all the way closed or open by the sound it makes.
Reply
Old Apr 20, 2005 | 08:41 PM
  #8  
Super Sport Beast's Avatar
On The Tree
 
Joined: Mar 2005
Posts: 143
Likes: 0
From: South Side Chicago
Default

Originally Posted by LS69TA
It'll make the motor die on you alot sooner. You can tell when it's all the way closed or open by the sound it makes.
Why would the motor die alot sooner, cuz of a cut-out???
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

10 Reasons Daily Driving a Swap Project SUCKS! (& 1 Reason to Do It Anyway)

 Michael S. Palmer
story-1

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

 Brett Foote
story-2

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

 Pouria Savadkouei
story-3

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

 Verdad Gallardo
story-4

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-5

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

 Verdad Gallardo
story-6

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

 Pouria Savadkouei
story-7

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

 Verdad Gallardo
story-8

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-9

Top 10 Most Powerful Chevy Trucks Ever Made!

 
Old Apr 20, 2005 | 09:15 PM
  #9  
1999T/A's Avatar
TECH Apprentice
iTrader: (4)
 
Joined: May 2004
Posts: 300
Likes: 0
From: Fuquay Varina , NC
Default

Originally Posted by Super Sport Beast
Why would the motor die alot sooner, cuz of a cut-out???
Hes talkin about the little electric motor on the cutout dying sooner not the actual motor in the car . . .
Reply
Old Apr 20, 2005 | 09:25 PM
  #10  
Super Sport Beast's Avatar
On The Tree
 
Joined: Mar 2005
Posts: 143
Likes: 0
From: South Side Chicago
Default

Originally Posted by 1999T/A
Hes talkin about the little electric motor on the cutout dying sooner not the actual motor in the car . . .
hahhaha lol my bad .......
Reply
Old Apr 20, 2005 | 09:48 PM
  #11  
LS69TA's Avatar
TECH Veteran
iTrader: (30)
 
Joined: Jan 2003
Posts: 4,391
Likes: 0
From: Texarkana, Tx
Default

I have those moments myself
Reply
Old Apr 20, 2005 | 09:51 PM
  #12  
'02 SLP#686's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: May 2003
Posts: 1,647
Likes: 0
From: Leominster, MA
Default

Gained me some time at the track
Reply
Old Apr 20, 2005 | 09:55 PM
  #13  
SLEEK00SS's Avatar
Launching!
 
Joined: Sep 2004
Posts: 263
Likes: 0
From: Rochester, NY
Default

Do they make them for 3" exhaust? I have seen 2 1/2" for sale. Not 3". If so, who sells it?
Reply
Old Apr 20, 2005 | 10:28 PM
  #14  
WS-Sick's Avatar
TECH Fanatic
20 Year Member
 
Joined: Nov 2003
Posts: 1,380
Likes: 0
From: The point of no return...
Default

My cutout is a 3" peice. They are a sponsor on this site I believe. Check my sig.
Reply
Old Apr 21, 2005 | 12:01 AM
  #15  
Ken@xxxxx's Avatar
On The Tree
 
Joined: Mar 2003
Posts: 136
Likes: 0
From: Dirty Jerz (NJ)
Default

yup, we have 3 inch available, any other questions or if you wanna order. Give us a call
Reply
Old Apr 21, 2005 | 02:53 AM
  #16  
transAm-98's Avatar
TECH Enthusiast
iTrader: (1)
 
Joined: Mar 2005
Posts: 625
Likes: 0
From: CA, Bay Area
Default

not to rag on QTP, they make awesome products, and electric cutouts are a fun to play with. but if i could do it all over again i wouldn't have gotten the cut-outs. they tend to leak and the motors like to work themselves lose. i've had to take them apart and tighten up the bolts inside twice now. plus the track almost always shuts me down when i try to run them open. i'm going to swap them for true duals.
Reply
Old Apr 21, 2005 | 01:20 PM
  #17  
Ant's-WS6's Avatar
On The Tree
 
Joined: Aug 2004
Posts: 178
Likes: 0
From: Jersey Shore
Default

Originally Posted by Ken@QTP
yup, we have 3 inch available, any other questions or if you wanna order. Give us a call
Okay, here's a dumb newbie questions but if I don't ask I won't learn...1) How many are usually installed on say a T/A? Right now my system is stock but in the next week or 2 I'm going to be installing my Corsa cat-back. I am planning on getting long tubes and new Y (probably with low restricted cats - have no real need for an off-road plus if it helps with emissions a little that's a good enough excuse for me...anyway) sometime in the fall. 2) Should I wait until I get the new headers and Y or does it not matter if the cut-out is installed now and the headers and Y later?

Thanks man, any help is appreciated.

Ant
Reply
Old Apr 21, 2005 | 02:32 PM
  #18  
2KThunder's Avatar
Thread Starter
TECH Fanatic
iTrader: (4)
 
Joined: May 2003
Posts: 1,670
Likes: 0
From: San Marcos, TX
Default

Usually its one, behind the cat, for sound purpose, and some performance. For an all out drag car or a car with true duals its usually 2, before cats.
Reply
Old Apr 21, 2005 | 02:35 PM
  #19  
LS69TA's Avatar
TECH Veteran
iTrader: (30)
 
Joined: Jan 2003
Posts: 4,391
Likes: 0
From: Texarkana, Tx
Default

There's a perfect spot on the I-pipe just under the pass. side rear seat. You also have a grommet right there to feed the cord into.
Reply
Old Apr 21, 2005 | 02:37 PM
  #20  
Ant's-WS6's Avatar
On The Tree
 
Joined: Aug 2004
Posts: 178
Likes: 0
From: Jersey Shore
Default

Cool, thanks guys!

Ant
Reply



All times are GMT -5. The time now is 11:36 AM.

story-0
10 Reasons Daily Driving a Swap Project SUCKS! (& 1 Reason to Do It Anyway)

Slideshow: 10 reasons daily-driving a swap project might not be for you. Or is it?

By Michael S. Palmer | 2026-06-17 09:39:05


VIEW MORE
story-1
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-2
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 | 2026-06-18 10:26:23


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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