Cut out exhaust? is it worth it?
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
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..
By the way, your sig pic is too big..
Last edited by Z28Venom; Nov 12, 2004 at 02:54 PM.
TECH Apprentice
Joined: Sep 2003
Posts: 380
Likes: 0
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).
You won't be disappointed...but make sure you're running headers. Cutouts sound like **** with stock manifolds (from what I hear others say).
Trending Topics
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"
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
TECH Senior Member
iTrader: (10)
Joined: Nov 2001
Posts: 8,766
Likes: 0
From: Gainesville, Denton TX
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..
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..
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.
TECH Enthusiast
Joined: Jun 2003
Posts: 720
Likes: 0
From: So Cal
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.
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.
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. 
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. 
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.
, 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.. 
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.
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.
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.