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

Cut out exhaust? is it worth it?

Thread Tools
 
Search this Thread
 
Old 11-12-2004, 02:17 PM
  #1  
Launching!
Thread Starter
iTrader: (1)
 
BPLS1's Avatar
 
Join Date: May 2004
Location: Murrieta, CA
Posts: 251
Likes: 0
Received 0 Likes on 0 Posts
Default Cut out exhaust? is it worth it?

I was really thinking about buying the cut out exhaust for my car next week. i was wondering should i expect a difference in performance and is it worth it to buy the cut out. Thanks
Old 11-12-2004, 02:28 PM
  #2  
TECH Fanatic
iTrader: (1)
 
luv2spd's Avatar
 
Join Date: Feb 2004
Location: Newton, KS
Posts: 1,152
Likes: 0
Received 0 Likes on 0 Posts

Default

You should see a gain esp. considering you've got a flowmaster.
Old 11-12-2004, 02:42 PM
  #3  
TECH Addict
iTrader: (13)
 
Z28Venom's Avatar
 
Join Date: Jan 2004
Location: USN, Haze Grey and Underway
Posts: 2,900
Likes: 0
Received 1 Like on 1 Post

Default

You'll definitely see a gain since you're running the Blowmaster. Cuts are worth at a minimum 5HP. Good considering they only cost $30.

By the way, your sig pic is too big..

Last edited by Z28Venom; 11-12-2004 at 02:54 PM.
Old 11-12-2004, 02:50 PM
  #4  
777
TECH Senior Member
iTrader: (21)
 
777's Avatar
 
Join Date: Jun 2004
Location: Jacksonville, FL
Posts: 6,697
Likes: 0
Received 1 Like on 1 Post

Default

I'd expect 10-20rwhp...cause of the flowmaster
Old 11-12-2004, 04:30 PM
  #5  
TECH Fanatic
 
5POINT7's Avatar
 
Join Date: Feb 2004
Posts: 1,938
Likes: 0
Received 0 Likes on 0 Posts

Default

Ya, go with the cutout. Top-end performance is greatly improved, along with the best part: the sound.
Old 11-12-2004, 04:37 PM
  #6  
TECH Apprentice
 
nddragon01's Avatar
 
Join Date: Sep 2003
Posts: 380
Likes: 0
Received 0 Likes on 0 Posts

Default

I have a flowmaster and went to the cutout...the only time I cap it up is when the gf gets in the car 'cause "it's too damn loud" for her.

You won't be disappointed...but make sure you're running headers. Cutouts sound like **** with stock manifolds (from what I hear others say).
Old 11-12-2004, 05:05 PM
  #7  
11 Second Club
 
Durien's Avatar
 
Join Date: Oct 2002
Location: NY,CT & MA
Posts: 1,400
Likes: 0
Received 0 Likes on 0 Posts
Default

you would absolutely gain power from it...

i got a QTEC cutout... its awesome.. i can close it or open it from insisde the car with a little switch. its so cool
Old 11-12-2004, 05:45 PM
  #8  
Launching!
Thread Starter
iTrader: (1)
 
BPLS1's Avatar
 
Join Date: May 2004
Location: Murrieta, CA
Posts: 251
Likes: 0
Received 0 Likes on 0 Posts
Default

oh i another thing is that i have stock exhaust manifolds. I have not yet bought any after market headers yet. im looking at some PACESETTER LT Headers. should i wait till LTs before the cut out or should i put them on my stock "headers"
Old 11-12-2004, 05:58 PM
  #9  
TECH Senior Member
iTrader: (10)
 
Brandon Boomhauer's Avatar
 
Join Date: Nov 2001
Location: Gainesville, Denton TX
Posts: 8,766
Likes: 0
Received 0 Likes on 0 Posts
Default

I'd go with it now. I put one on my car and dynoed 10-15rwhp more with it open. However lower end tq was reduced... check the link in my sig (power tour pics) and there is a graph with the open/closed results...

I seem to burn more gas with it open at highway speed, but with the 410s you have I dont think that will be a problem..
Old 11-12-2004, 09:14 PM
  #10  
10 Second Club
iTrader: (16)
 
LS1LT1's Avatar
 
Join Date: Nov 2001
Posts: 9,331
Received 0 Likes on 0 Posts

Thumbs up

Originally Posted by BPLS1
i was wondering should i expect a difference in performance and is it worth it to buy the cut out.
YES
Old 11-13-2004, 12:06 AM
  #11  
11 Second Club
iTrader: (1)
 
dubs6's Avatar
 
Join Date: May 2004
Location: Dallas (Bush/Tollway)
Posts: 618
Likes: 0
Received 0 Likes on 0 Posts

Default

i gained 7hp adn 9tq with a cutout over ws6 exhaust (which flows better than stock) with stock cats and manifolds. a friend of mine has header and an auto and only picked up 5hp over hooker catback but picked up .20 at the track. so yes... one of the cheapest performance gains ever.
Old 11-13-2004, 01:46 PM
  #12  
TECH Enthusiast
 
Revelation222's Avatar
 
Join Date: Jun 2003
Location: So Cal
Posts: 720
Likes: 0
Received 0 Likes on 0 Posts
Default

I see a 15 hp 9 tq diff between the shitty flowmaster and my cut out. More importantly, that power is seen ALL across the power band. My cutout is under the rear passenger seat. The exaust was on the car when I bought it, so I'm not complaining.

I would run an electric cutout if you are mixing it up in the street very often. I can't tell you how many times I wish I could flip a switch for that extra 15 HP.

IMO, a cut out is one of the cheapest/easiest mods for the most HP on an F-body. I wouldnt hesitate on doing it unless you plan on going true duals anytime soon. Thats next on my agenda anyways. Good Luck to you.

Take Care.
Old 11-13-2004, 01:56 PM
  #13  
Banned
iTrader: (6)
 
XtrmLS1spd's Avatar
 
Join Date: Jun 2003
Location: Louisville, KY
Posts: 249
Likes: 0
Received 0 Likes on 0 Posts
Default

You will be suprised, but with a single cutout and cats, it sounds very good. But if I were you, wait till you get your headers and y-pipe and put dual cutouts on. Also, if you decide to just go single on the I-pipe, there is a GREAT place on the passenger side near the rearend. It seems like gm sutout a place on the car just to put a cutout on.
Old 11-13-2004, 11:26 PM
  #14  
TECH Fanatic
 
ZR2877's Avatar
 
Join Date: Jun 2002
Location: Ga
Posts: 1,654
Likes: 0
Received 0 Likes on 0 Posts

Default

I loved the way mine sounded with a cutout and stock manifolds. Now I have TD and I love it even more. I wouldn't hesitate to do a cutout if I was you.
Old 11-13-2004, 11:36 PM
  #15  
TECH Junkie
iTrader: (64)
 
Donohue96M6Z28's Avatar
 
Join Date: Sep 2004
Location: San Antonio, TX
Posts: 3,612
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by XtrmLS1spd
there is a GREAT place on the passenger side near the rearend. It seems like gm sutout a place on the car just to put a cutout on.
ur talking about RIGHT before the axle right? thats where mine is, HUGE difference , but for some reason, my friends is alot louder then mine, but he as a ramair kit, u guys think that might be why his is louder?, we both have flows, but he has a single cat and i have dual cats..
Old 11-14-2004, 12:50 PM
  #16  
Banned
iTrader: (6)
 
XtrmLS1spd's Avatar
 
Join Date: Jun 2003
Location: Louisville, KY
Posts: 249
Likes: 0
Received 0 Likes on 0 Posts
Default

Yes, right before the axle. His is louder, because he hasa single cat and you have duals.
Old 11-14-2004, 01:24 PM
  #17  
Teching In
 
PatriotRedZ's Avatar
 
Join Date: Nov 2004
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Default

I love cutouts, some may not like the sound but for the money I dont see how you can beat it. Its better than a catback imo
Old 11-14-2004, 01:42 PM
  #18  
TECH Fanatic
iTrader: (3)
 
Ryan02SS's Avatar
 
Join Date: May 2003
Location: Lake Anna, VA/ Fairmont, WV
Posts: 1,795
Likes: 0
Received 0 Likes on 0 Posts
Default

Get one. You'll see and maybe even feel a gain over the flowmaster and the car will sound alot meaner. The QTEC is awesome and I love mine. Open or closed in 5 secs. I gained 5rwhp @ 5rwtq with mine over my Corsa muffler. The lines were the same until around 4300rpms where the cutout started making more power.
Old 11-14-2004, 03:03 PM
  #19  
TECH Junkie
iTrader: (2)
 
AINT SKEERED's Avatar
 
Join Date: Apr 2002
Location: Albany La
Posts: 3,985
Received 350 Likes on 239 Posts

Default

I have a cutout in my edelbrock catback. when my engine was fresh and not broke in yet, I made 372/371 through the muffler. Opened it right after that pull with no cooldown and went 389 hp/382 tq. SOme of this may be due to the first pull never being the highest on the dyno but I also gain 2 mph at the track with the cutout open.
I know the edelbrock is not a top performing exh. for the f body but it sure is the best sounding I ever heard so I just open the cutout when I want to go faster.
Old 11-14-2004, 03:21 PM
  #20  
TECH Resident
iTrader: (1)
 
msbz_ls1's Avatar
 
Join Date: Jul 2004
Location: Kansas
Posts: 896
Likes: 0
Received 1 Like on 1 Post
Default

im installing my cutout next week..when it comes..anyone here...got pics of this place before the rear axle where you should put it?



All times are GMT -5. The time now is 10:34 PM.