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

Should I bother w/a cut out?

Thread Tools
 
Search this Thread
 
Old 09-04-2006, 02:02 PM
  #1  
Banned
Thread Starter
iTrader: (13)
 
NewCar's Avatar
 
Join Date: Apr 2006
Location: PA
Posts: 209
Likes: 0
Received 0 Likes on 0 Posts
Question Should I bother w/a cut out?

Had one on my LT1 car, but I had a cat etc.

Worth it to slap one on my TA at this point?
Old 09-04-2006, 02:07 PM
  #2  
MJK
TECH Resident
iTrader: (3)
 
MJK's Avatar
 
Join Date: Mar 2005
Location: Texas...
Posts: 904
Likes: 0
Received 1 Like on 1 Post

Default

According to your link,you already have a Magnaflow catabck...Magnaflows are good stuff man...I personally don't think you will gain anything more from a cutout other than volume...so if that interests you then yeah,go for it...other wise look like you have a pretty good exhaust setup as is...Nice TA BTW!

just my $0.02....
Old 09-04-2006, 04:00 PM
  #3  
ЯєŧąяĐ Єl¡m¡иąŧøя ™
iTrader: (18)
 
orangeapeel's Avatar
 
Join Date: Nov 2004
Location: Justin, TX
Posts: 16,083
Likes: 0
Received 4 Likes on 4 Posts

Default

You will lose low end tq with a cut-out but pick up some hp up top. They are a nice edition to most catbacks. Some people like to think that they are defeating the purpose of the catback to begin with. All a matter of preference. It just makes a system more flexible for tuning purposes and track duty.
Old 09-04-2006, 04:10 PM
  #4  
TECH Senior Member
iTrader: (1)
 
NHRAMAN's Avatar
 
Join Date: Apr 2005
Location: Vancouver,[KITSILANO].B.C. Canada *WestCoast*
Posts: 8,810
Likes: 0
Received 0 Likes on 0 Posts
Thumbs up

Electric cutouts are a "whole buncha fun"........that's what I think....
Old 09-04-2006, 07:43 PM
  #5  
TECH Senior Member
iTrader: (8)
 
staringback05's Avatar
 
Join Date: Apr 2006
Posts: 6,695
Likes: 0
Received 2 Likes on 2 Posts
Default

with the catback u wont do much over all
Old 09-04-2006, 07:50 PM
  #6  
TECH Resident
iTrader: (2)
 
blackfang's Avatar
 
Join Date: Jul 2002
Location: Richmond, VA
Posts: 885
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by NHRAMAN
Electric cutouts are a "whole buncha fun"........that's what I think....
And a PITA
Old 09-04-2006, 08:33 PM
  #7  
TECH Fanatic
iTrader: (2)
 
JerseyLS1TA's Avatar
 
Join Date: Nov 2004
Location: Jersey Shore
Posts: 1,734
Likes: 0
Received 0 Likes on 0 Posts

Default

I put a cutout on my Magnaflow catback just so I can have that obnoxious rumble from time to time.
Old 09-04-2006, 09:15 PM
  #8  
TECH Senior Member
iTrader: (1)
 
NHRAMAN's Avatar
 
Join Date: Apr 2005
Location: Vancouver,[KITSILANO].B.C. Canada *WestCoast*
Posts: 8,810
Likes: 0
Received 0 Likes on 0 Posts
Exclamation

Originally Posted by blackfang
And a PITA
not mine...............'touch wood'
Old 09-05-2006, 06:27 AM
  #9  
On The Tree
 
erickeown's Avatar
 
Join Date: Aug 2006
Location: bowling green ky
Posts: 146
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by NewCar
Had one on my LT1 car, but I had a cat etc.

Worth it to slap one on my TA at this point?
i have a 93 z with a flowmaster and highflo cat. I was wondering the same thing. What kind of hp gain would i get, would i lose torque?
Old 09-05-2006, 04:31 PM
  #10  
MJK
TECH Resident
iTrader: (3)
 
MJK's Avatar
 
Join Date: Mar 2005
Location: Texas...
Posts: 904
Likes: 0
Received 1 Like on 1 Post

Default

Originally Posted by erickeown
i have a 93 z with a flowmaster and highflo cat. I was wondering the same thing. What kind of hp gain would i get, would i lose torque?
Being that it seems most of the popular opinion is that Flowmaster doesn't flow very well,You actually might pick up a small gain with the cutout...
Old 09-05-2006, 07:04 PM
  #11  
Banned
Thread Starter
iTrader: (13)
 
NewCar's Avatar
 
Join Date: Apr 2006
Location: PA
Posts: 209
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by MJK
Being that it seems most of the popular opinion is that Flowmaster doesn't flow very well,You actually might pick up a small gain with the cutout...
I knocked off at least .1 in the 1/4 on my LT1 Z when I added the cut out. I also had flowmaster on it.
Old 09-06-2006, 09:11 AM
  #12  
On The Tree
 
erickeown's Avatar
 
Join Date: Aug 2006
Location: bowling green ky
Posts: 146
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by NewCar
I knocked off at least .1 in the 1/4 on my LT1 Z when I added the cut out. I also had flowmaster on it.
thanks man
Old 09-06-2006, 10:50 AM
  #13  
Tech Resident
 
ChocoTaco369's Avatar
 
Join Date: Jan 2006
Location: Philly
Posts: 5,117
Likes: 0
Received 2 Likes on 2 Posts
Default

do it. you'll surely pick up a gain over the magnaflow. magnaflow flows okay, but it's nothing to brag about. gmmg and both loudmouths surely outflow it. i bet you'll pick up 3-5 rwhp over the muffler. oxidizer himself said it's restrictive over 400rwhp. granted you're not making that much, but it implies there is definitely restriction built into it to gain over.

to me, it's all about sound. i just ordered a manual stainless cutout during thunder racing's labor day sale to compliment my stainless corsa system. corsa's said to flow very well, probably just as well as a magnaflow. i've heard reports of a measly 3hp gained with an open cutout...but it's about the fun factor more than power. do the cutout for when you wanna be "that guy", the gain is a moot point IMO, though it definitely helps
Old 09-06-2006, 10:57 AM
  #14  
TECH Addict
iTrader: (4)
 
ShevrolayZ28's Avatar
 
Join Date: May 2005
Location: Massachusetts
Posts: 2,318
Likes: 0
Received 1 Like on 1 Post

Default

My car has a Bassani catback with a big *** muffler. I got the big muffler hoping that the car would be quiet but now without cats and with LT's, cam and heads, it's still pretty loud. If I could do it again I'd stick with the stock catback and install an electronic cutout.

Heck I may install one anyway, the other day when I had it on the dyno it really sounded like the exhaust was fighting to get out. Crazy high pitched rasp.
Old 09-06-2006, 11:02 AM
  #15  
On The Tree
iTrader: (1)
 
0utlawTorn's Avatar
 
Join Date: May 2006
Location: Toledo, OH
Posts: 152
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by ChocoTaco369
do it. you'll surely pick up a gain over the magnaflow. magnaflow flows okay, but it's nothing to brag about. gmmg and both loudmouths surely outflow it.
Hmm...I definitely remember reading an article someone posted where a bunch of catbacks where dyno'd on the same car the Magnaflow catback made the most power of any of the catbacks that were tested, SLP included. Granted it was like 2hp more
Old 09-07-2006, 07:05 AM
  #16  
Tech Resident
 
ChocoTaco369's Avatar
 
Join Date: Jan 2006
Location: Philly
Posts: 5,117
Likes: 0
Received 2 Likes on 2 Posts
Default

Originally Posted by 0utlawTorn
Hmm...I definitely remember reading an article someone posted where a bunch of catbacks where dyno'd on the same car the Magnaflow catback made the most power of any of the catbacks that were tested, SLP included. Granted it was like 2hp more
while i'm in no way calling you a liar, i doubt the magnaflow muffler is more efficient than the SLP loudmouth. all it has is a resonator. it's scientifically impossible. even oxidizr said it's restrictive over 400rwhp and they are currently in the making of a race magnaflow.
Old 09-07-2006, 07:13 AM
  #17  
TECH Resident
iTrader: (2)
 
blackfang's Avatar
 
Join Date: Jul 2002
Location: Richmond, VA
Posts: 885
Likes: 0
Received 0 Likes on 0 Posts

Default

You will love the cutout. Electric are expensive and i would not recommend QTP's.

I forger the name of tyhe company, but theirs comes with a 4 year warranty and when the cutout is fully opened or closed, the motor shuts off.
Old 09-07-2006, 08:39 AM
  #18  
On The Tree
iTrader: (1)
 
0utlawTorn's Avatar
 
Join Date: May 2006
Location: Toledo, OH
Posts: 152
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by ChocoTaco369
while i'm in no way calling you a liar, i doubt the magnaflow muffler is more efficient than the SLP loudmouth. all it has is a resonator. it's scientifically impossible. even oxidizr said it's restrictive over 400rwhp and they are currently in the making of a race magnaflow.
Hey I couldn't believe the article either. I was wondering why an exhaust that pretty much has a straight pipe would make less. When it comes to 2-3 hp, I'm sure there is a general margin of error on a dyno. I'm sure they produce around the same power.
The Magnaflow catback did make more rwtq for sure though
Old 09-07-2006, 09:10 AM
  #19  
TECH Veteran
iTrader: (30)
 
LS69TA's Avatar
 
Join Date: Jan 2003
Location: Texarkana, Tx
Posts: 4,391
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by blackfang
And a PITA
Old 09-07-2006, 09:22 AM
  #20  
TECH Resident
iTrader: (2)
 
blackfang's Avatar
 
Join Date: Jul 2002
Location: Richmond, VA
Posts: 885
Likes: 0
Received 0 Likes on 0 Posts

Default

Mine broke for good last night. So I am taking the wiring out and just using a cap on it.



All times are GMT -5. The time now is 08:41 AM.