Electric cutouts right after the headers?
Thread Starter
Intermediate
Joined: Jul 2005
Posts: 41
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Electric cutouts right after the headers?
Does anyone have two electric cutouts right after the header? Is there enough room to place them?
I was thinking of getting headers and putting two cutouts right after, and running it all to the stock catback for quiet ride, but have it open all the way for the strip.
Any ideas, pictures, comments would be appreciated.
thanks
OP
I was thinking of getting headers and putting two cutouts right after, and running it all to the stock catback for quiet ride, but have it open all the way for the strip.
Any ideas, pictures, comments would be appreciated.
thanks
OP
Le Mans Master
Joined: Jun 2004
Posts: 6,752
Likes: 3
From: Bethlehem PA
Originally Posted by OdessitPashka
Does anyone have two electric cutouts right after the header? Is there enough room to place them?
I was thinking of getting headers and putting two cutouts right after, and running it all to the stock catback for quiet ride, but have it open all the way for the strip.
Any ideas, pictures, comments would be appreciated.
thanks
OP
I was thinking of getting headers and putting two cutouts right after, and running it all to the stock catback for quiet ride, but have it open all the way for the strip.
Any ideas, pictures, comments would be appreciated.
thanks
OP
The heat alone would kill the motors in no time and I think you'd actually compromise significant power loss due to the change if flow at a crucial point in the exhaust system.
I've heard guys that gained 0 power on the dyno by using these because it interrupted the flow more than going through the exhaust.
Scott
Drifting
Joined: May 2004
Posts: 1,783
Likes: 0
From: Coral Springs Fl
We have been experimenting with the idea of cut-outs. One plan is to have a cut-out welded by the mufflers to simply bypass the muffler and go right out through your exhaust tips. Another plan is to split right after the x-pipe.
Pro
Joined: Jan 2004
Posts: 525
Likes: 0
From: Morton IL
You would get more. How much is debatable, and depends on what catback you have. On my cammed 00 WS-6 with stock ls1 heads/intake and stock ws-6 catback, i got about 7. I know of guys who get about 20 on big motors, with 2.
http://redshift.homestead.com/cutouts.html
http://redshift.homestead.com/cutouts.html
Le Mans Master
Joined: Jun 2004
Posts: 6,752
Likes: 3
From: Bethlehem PA
Originally Posted by OdessitPashka
Thanks for a quick reply.
So, what would you suggest for a quiet daily driven car that wants all the power at the strip on a weekend?
Thanks
OP
So, what would you suggest for a quiet daily driven car that wants all the power at the strip on a weekend?
Thanks
OP
Long tube headers are great for hp gains, but make your car significantly louder even with a good exhaust.
I went with long tube headers, off road x pipe (not really louder than hi flo cats I had from same company) and the stock Z06 titanium exhaust.
Nice, but tame rumble at idle and above 3500 rpm screams. The ti's also flow pretty good compared to aftermarket units costing $700-$1000. I think the horsepower loss is only a few ponies, maybe 5 at most with the ti's.
Again, it's tough to help you more without knowing your current set up and what your end goals are.
if you're going to do heads and cam down the road or just bolt ons.
Drop me a pm if you have any other questions I can help you with.
Scott
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Thread Starter
Intermediate
Joined: Jul 2005
Posts: 41
Likes: 0
Originally Posted by wango tango
You would get more. How much is debatable, and depends on what catback you have. On my cammed 00 WS-6 with stock ls1 heads/intake and stock ws-6 catback, i got about 7. I know of guys who get about 20 on big motors, with 2.
http://redshift.homestead.com/cutouts.html
http://redshift.homestead.com/cutouts.html
Sounds amazing too
Not sure what your current set up is, but you'd have to define "quiet" and that is subjective to say the least.
Long tube headers are great for hp gains, but make your car significantly louder even with a good exhaust.
I went with long tube headers, off road x pipe (not really louder than hi flo cats I had from same company) and the stock Z06 titanium exhaust.
Nice, but tame rumble at idle and above 3500 rpm screams. The ti's also flow pretty good compared to aftermarket units costing $700-$1000. I think the horsepower loss is only a few ponies, maybe 5 at most with the ti's.
Again, it's tough to help you more without knowing your current set up and what your end goals are.
if you're going to do heads and cam down the road or just bolt ons.
Drop me a pm if you have any other questions I can help you with.
Scott
Long tube headers are great for hp gains, but make your car significantly louder even with a good exhaust.
I went with long tube headers, off road x pipe (not really louder than hi flo cats I had from same company) and the stock Z06 titanium exhaust.
Nice, but tame rumble at idle and above 3500 rpm screams. The ti's also flow pretty good compared to aftermarket units costing $700-$1000. I think the horsepower loss is only a few ponies, maybe 5 at most with the ti's.
Again, it's tough to help you more without knowing your current set up and what your end goals are.
if you're going to do heads and cam down the road or just bolt ons.
Drop me a pm if you have any other questions I can help you with.
Scott
I plan on doing full bolt ons and with enough funds might get FM13 eventually. I love drag racing, so I might also put 100-150shot of nitrous just for the 1/4 passes. Clutch and suspension mods are on a list as well.
Thanks for great help guys. Really appreciate all the replies with lots of useful information.
OP
Last edited by OdessitPashka; Jan 25, 2006 at 11:38 PM.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
Originally Posted by taaz024
We have been experimenting with the idea of cut-outs. One plan is to have a cut-out welded by the mufflers to simply bypass the muffler and go right out through your exhaust tips. Another plan is to split right after the x-pipe.
Tony Mamo did it with Z06 TI's, but it was a lot of work. Welding TI is apparently very difficult and not many places can do it. Do a search on the archives for his name and you'll see it his thread. Very clean applicaton but he admitted it was a LOT of time invested.
Here's another thread with some good examples:
http://forums.corvetteforum.com/show...post1552230939
My car's going in for QTP cutouts next week with any luck.
Drifting
Joined: Oct 2004
Posts: 1,384
Likes: 8
From: Southwest Virginia
I installed mine like Patches (but I think my welding looks better 
). These are 2.5" McCord cutouts on a 3" LG X-pipe just before the cat back (with DTE brace). I used all stainless pipe and even had to make my own stainless flanges. My theory on this is when you dump through two 2.5" holes and out through the factory cat back, its going to be pretty close to open exhaust. I have no idea how much gain these will give (someday I will find out when on a dyno) but I can tell you a LOT of noisy comes out those two 2.5" holes! A big cam, 11:1 and open exhaust sure does make some awesome rice intimidating racket!
BTW: If you don't have a diff. brace and think you will ever get one, install it before you do your cutout if you put then under the trans or you will be redoing them!
). These are 2.5" McCord cutouts on a 3" LG X-pipe just before the cat back (with DTE brace). I used all stainless pipe and even had to make my own stainless flanges. My theory on this is when you dump through two 2.5" holes and out through the factory cat back, its going to be pretty close to open exhaust. I have no idea how much gain these will give (someday I will find out when on a dyno) but I can tell you a LOT of noisy comes out those two 2.5" holes! A big cam, 11:1 and open exhaust sure does make some awesome rice intimidating racket! BTW: If you don't have a diff. brace and think you will ever get one, install it before you do your cutout if you put then under the trans or you will be redoing them!
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
Originally Posted by SpeedyZ
BTW: If you don't have a diff. brace and think you will ever get one, install it before you do your cutout if you put then under the trans or you will be redoing them!
I should have contracted with you to make the pipes!
Thanks for the inspiration. Imitation is the sincerest form of flattery!
Thread Starter
Intermediate
Joined: Jul 2005
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Looks great speedy! I'm gonna have to find a shop to do all the welding work and hope that it's gonna look just as nice Or I could pay you to make me exact same setup when I decide to get it?
I think even if it doesn't give a full potential of an aftermarket exhaust, it couldn't be rubbing more than 5hp, and I could deal with it knowing that my head will not be be hurting on a long trips and neighbors won't be complaning
Thanks again
Or I could pay you to make me exact same setup when I decide to get it?I think even if it doesn't give a full potential of an aftermarket exhaust, it couldn't be rubbing more than 5hp, and I could deal with it knowing that my head will not be be hurting on a long trips and neighbors won't be complaning
Thanks again
Thread Starter
Intermediate
Joined: Jul 2005
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Originally Posted by RAO-3
If you check with Barry at QTP, he actually has an X-pipe which is set up for his cut outs.
Ray
Ray
Thanks
EDIT: found them on QTP website. $835. Not bad considering that cut-outs alone would cost $400 and this comes with a x-pipe and all the work is already done. I'll get in touch with them to see if this x-pipe mates to any other headers besides their own.
Last edited by OdessitPashka; Jan 26, 2006 at 10:47 PM.
Drifting
Joined: Oct 2004
Posts: 1,384
Likes: 8
From: Southwest Virginia
Thanks for the complements guys! That was actually my first time TIG welding. I had done lots of welding before just never on a TIG. The guy showed me how and said "lock the door when you leave" and took off. I have since got my own TIG and have done a lot of TIG welding and due to little help from a old pro I'm getting fairly good at it! This project was time consuming, grinding and machining everything to fit perfectly, then welding everything on the inside. Everything you see is bare stainless steel, no paint or any finish. When done I simply blasted the pipes with glass beads so everything would be the same color.
That was actually my first time TIG welding. I had done lots of welding before just never on a TIG. The guy showed me how and said "lock the door when you leave" and took off. I have since got my own TIG and have done a lot of TIG welding and due to little help from a old pro I'm getting fairly good at it! This project was time consuming, grinding and machining everything to fit perfectly, then welding everything on the inside. Everything you see is bare stainless steel, no paint or any finish. When done I simply blasted the pipes with glass beads so everything would be the same color.
1st Gear
Joined: Mar 2020
Posts: 1
Likes: 1
Reply to cutouts right after headers.
I have a 2006 gto and it has the cutouts right after the headers and it sounds great at idle and that's it. Car felt like it lost power and is way to loud no back pressure and it's bad for the valve train also. Wouldn't recommend
