...ask him that. 
Y pipe help
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Junior User
Joined: Sep 2007
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Y pipe help
one of the mechanics I spoke with said that ford designed the restrictions in the exhaust y pipe to increase lower end torque. I kind of think he full of it, but would like to know if anyone has heard of this.
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Joined: Mar 2007
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From: Pa
I got noticably more low end torque with mine after swapping out the stock Y-pipe. You could tell more torque was on tap down low, especially when cruising on the highway.
After seeing the claims of 35hp and 35 tq gains that the seller of the ebay y-pipe says, I have to say he is probably right. Below 2k rpm I would not be surprised if the claimed power increase was attained because an increase is very noticeable to me.
The stock y-pipe is to help eliminate flutter, thats it.
After seeing the claims of 35hp and 35 tq gains that the seller of the ebay y-pipe says, I have to say he is probably right. Below 2k rpm I would not be surprised if the claimed power increase was attained because an increase is very noticeable to me.
The stock y-pipe is to help eliminate flutter, thats it.
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
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From: Washington State
No way that swap gains 35/35...no WAY!
Most HP I've seen indicated with my Scan Gauge is 318HP @ around 4K in 3rd. Certainly not proof of anything conclusive since, admittedly, I don't know exactly how the computer is coming up with their HP number. But if I assume that Ford's 310HP rating is accurate and my truck actually did produce exactly that amount at the crank, then my Y-pipe and exhaust only gave me a 8HP gain (indicated)
Most HP I've seen indicated with my Scan Gauge is 318HP @ around 4K in 3rd. Certainly not proof of anything conclusive since, admittedly, I don't know exactly how the computer is coming up with their HP number. But if I assume that Ford's 310HP rating is accurate and my truck actually did produce exactly that amount at the crank, then my Y-pipe and exhaust only gave me a 8HP gain (indicated)
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Joined: Mar 2007
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From: Pa
I'm not talking peak hp or tq gains. A little over 1000 rpm or so. At horsepower and torque peaks a gain of a couple hp is probably what the y pipe yields.
Where do you think banks got there hp and tq claims from? +56hp and +67lb. ft. torque shurly is not gained at the peak of the hp and tq. Banks got there numbers from the highest gain at a given point somewhere throughout the rpm range.
Where do you think banks got there hp and tq claims from? +56hp and +67lb. ft. torque shurly is not gained at the peak of the hp and tq. Banks got there numbers from the highest gain at a given point somewhere throughout the rpm range.
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Joined: Mar 2007
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From: Pa
Only the 2V. The 3V has a much better exhaust setup than the 2V. The 3V also has more "headerlike" exhaust manifolds.
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Senior User
Joined: Feb 2006
Posts: 120
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From: Newhall, California
Who makes the aftermarket "Y" pipes and what do they say they can do for you. When I installed a larger gas tank in my truck I looked at the exhaust system and couldn't beleive that someone would allow that design in production. I've been wanting to replace it but was going to wait until the warrenty exspired. Now it has and I'm ready to start looking.
That design must be for some other configuration and they just made the one for all the trucks.
That design must be for some other configuration and they just made the one for all the trucks.
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Hotshot
Joined: Mar 2007
Posts: 10,101
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From: Pa
There are two guys that you can get the direct-fit cut and weld in Y-pipes. A guy on ebay sells them as well as Stan's headers sells one. Both work good, have nice thick tubing and arn't hard to install.
99'-00' have a different y-pipe than the 01'-04' SD 2V. Two different y-pipes are available.
I think replacing the Y-pipe is very worthwhile. Its nowhere near the cost of headers, but still provides a noticeable increase in power.
99'-00' have a different y-pipe than the 01'-04' SD 2V. Two different y-pipes are available.
I think replacing the Y-pipe is very worthwhile. Its nowhere near the cost of headers, but still provides a noticeable increase in power.
Senior User
Joined: Jun 2005
Posts: 176
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From: Central IL
I have a stupid question about the eBay Y-pipe. I admit that I am not a welder by any means, but I know a couple. I know some exhaust materials are not very easily weldable. I was wondering what material the pipe comes in, I saw a stainless model offered and I know I have no way to weld stainless. My welding availability basically is wire weld with argon. Will this work for to install the Y-pipe? Sorry for asking the obvious, but thanks for the help.
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Joined: Oct 2006
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I had the e-bay Y installed and a Troyer tune at the same time. The difference was quite noticeable. Acceleration, power(torque) smoother running, and noticeably better throttle response. Don't know how much increase is due to which, but I do know that I am quite happy with both of them.
Take a look at the factory pipe (00-04) and you have to wonder just what kind of moron designed that piece of junk.
Seems that pulling my 12K lb. boat and trailer I have gained ~ 1/2 mpg. The improvement in performance is quite noticeable towing too!
Take a look at the factory pipe (00-04) and you have to wonder just what kind of moron designed that piece of junk.
Seems that pulling my 12K lb. boat and trailer I have gained ~ 1/2 mpg. The improvement in performance is quite noticeable towing too!
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
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From: Washington State
Originally Posted by Monsta
Most HP I've seen indicated with my Scan Gauge is 318HP @ around 4K in 3rd.
See my other post concerning it. 
Hotshot
Joined: Mar 2007
Posts: 10,101
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From: Pa
Originally Posted by F150'94
I have a stupid question about the eBay Y-pipe. I admit that I am not a welder by any means, but I know a couple. I know some exhaust materials are not very easily weldable. I was wondering what material the pipe comes in, I saw a stainless model offered and I know I have no way to weld stainless. My welding availability basically is wire weld with argon. Will this work for to install the Y-pipe? Sorry for asking the obvious, but thanks for the help.
By "Wire Weld With Argon" I take it you mean a MIG welder with argon shielding gas. You can weld steel with stainless wire and stainless with steel wire. Obviously if you weld stainless with steel wire you weld will not be rust resistant, but it will weld fine regardless.
For steel I use ER70 wire and for stainless I use ER308L wire. For thin metal such as exhaust work a thinner .023"-.025" wire works best. Practice on a scrap piece of exhaust tubing of similar thickness sheetmetal to get the welder set-up right.
To help keep the welds from rusting you can pick up a can of high heat paint. I use Duplicolor 1200 deg. header paint "Aluminum" color. Costs $6 can at napa.
Senior User
Joined: Jun 2005
Posts: 176
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From: Central IL
Originally Posted by dkf
You can get the y-pipe in stainless or plain steel.
By "Wire Weld With Argon" I take it you mean a MIG welder with argon shielding gas. You can weld steel with stainless wire and stainless with steel wire. Obviously if you weld stainless with steel wire you weld will not be rust resistant, but it will weld fine regardless.
For steel I use ER70 wire and for stainless I use ER308L wire. For thin metal such as exhaust work a thinner .023"-.025" wire works best. Practice on a scrap piece of exhaust tubing of similar thickness sheetmetal to get the welder set-up right.
To help keep the welds from rusting you can pick up a can of high heat paint. I use Duplicolor 1200 deg. header paint "Aluminum" color. Costs $6 can at napa.
By "Wire Weld With Argon" I take it you mean a MIG welder with argon shielding gas. You can weld steel with stainless wire and stainless with steel wire. Obviously if you weld stainless with steel wire you weld will not be rust resistant, but it will weld fine regardless.
For steel I use ER70 wire and for stainless I use ER308L wire. For thin metal such as exhaust work a thinner .023"-.025" wire works best. Practice on a scrap piece of exhaust tubing of similar thickness sheetmetal to get the welder set-up right.
To help keep the welds from rusting you can pick up a can of high heat paint. I use Duplicolor 1200 deg. header paint "Aluminum" color. Costs $6 can at napa.