Open headers compared to cutout
Thread Starter
On The Tree
Joined: Nov 2007
Posts: 183
Likes: 1
From: West Palm Beach, Fl
Open headers compared to cutout Well I installed my LT's and an ORY last weekend. I ran around the whole weekend with open headers and LOVED the sound. I'm about to order an electric cutout and was wondering how different an open cutout will sound compared to open headers. Thanks in advance for any input.
Well with my cutout open the car is loud. Gets some rasp around 2000 rpms but nothing I can't stand though. I imagine the open headers would be louder since they are directly under your feet. My cutout is under my passenger rear seat and it does drone in the car, but not that bad. I enjoy the sound of my cutout a lot. It is usually always open.
Thread Starter
On The Tree
Joined: Nov 2007
Posts: 183
Likes: 1
From: West Palm Beach, Fl
Yea I'm lookin forward to the cutout because the SLP dual/dual is so quiet. I'm just wondering the difference in sound between open headers and an open cutout. Does traveling through an ORY affect the sound a lot??
cutouts are quieter than open headers, most noticeably to the driver, because as stated, they are right uinder his feet. the sound will DEFINATLEY be more mellow, but a way to kind of meet in the middle is dual cutouts in the Y, less pipe for the sound ot travel through= louder. also get the benefit of not letting as much o2 creep back into your collecters as you would if you had open headers
I've never heard open headers in person. If they're louder than a cutout, then that'd be too loud for me. My cutout is right under the passenger front seat and it rattles everything in my car when it's open. It absolutely roars at WOT. I don't think I'd want anything louder. lol
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I'm sure open headers are louder, here's my setup with a vid below.. Haven't had a chance to drive it yet as it's winter here, but sure sounds nice.. Can't wait to nail it with em open.. Vid below pic.
Sorry in the vid you only see one cutout.. Cold start so not any real high revs, but you get the picture of the sound..
Sorry in the vid you only see one cutout.. Cold start so not any real high revs, but you get the picture of the sound..
I had open headers for like a week. Its hard on the o2s though with no pipe after the headers. It will burn them up. Anyways, I put my Y pipe on, and now its just open Y pipe. Here is a video. The ORY quieted it way down.
I currently have mine with a 3" off the Headers going into a 4" Y-pipe, then narrowing down gradually into a 3.5" with a 3.5" QTP Electric Cut Out about 16" from the Y-pipe Merge.
To be honest with you it actually sounds better like that and it a little louded IMO.. that little bit of back pressure helps out in my setup.
I'm running a 402ci LSX Stroker with a big Cam in it..pretty much can be heard for miles with the Cut Out open.
To be honest with you it actually sounds better like that and it a little louded IMO.. that little bit of back pressure helps out in my setup.
I'm running a 402ci LSX Stroker with a big Cam in it..pretty much can be heard for miles with the Cut Out open.
The car is pretty quiet at idle though with a cutout. I personally don't think my cutout is that loud, but when my friends follow me, they say it's pretty loud.
Keep in mind running open headers isn't too healthy because you're losing a shitton of backpressure.
Keep in mind running open headers isn't too healthy because you're losing a shitton of backpressure.
I just got my car back today from getting the headers/ORY installed and OMG it is to loud. Mine has a cutout as well right after the ORY and it is so loud I cant believe I didnt get stopped today for loud exhaust
I have cutouts on each header collector and with them open I drop 1 tenth and gain 1 mph vs. them being closed.
with a stock cam? probably so!
I can barely hear my cammed car with the cutout open when I am inside the car, and when I am driving I dont think its THAT loud, but everyone tells me its rediculous, so I let my dad drive, and follwed him around, and all I can say, is outside the car, its a whole diffrent world. Wayyyyy louder than I thought. Even at idle.
I can barely hear my cammed car with the cutout open when I am inside the car, and when I am driving I dont think its THAT loud, but everyone tells me its rediculous, so I let my dad drive, and follwed him around, and all I can say, is outside the car, its a whole diffrent world. Wayyyyy louder than I thought. Even at idle.