'03 v10 y-pipe, good or bad??? - Ford Truck Enthusiasts Forums



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'03 v10 y-pipe, good or bad???

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Old 03-07-2011, 12:10 AM
nunomad nunomad is offline
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'03 v10 y-pipe, good or bad???

I've got an '03 excursion with a V10 in it, I am quite happy with performance of the engine but don't know any different. Does the 03 breath better with different Y-pipe install, or is it the better of the factory installed pipes.If I should change it out, any recommendations on which of the aftermarket are better for performance and mileage.Any advice is greatly appreciated. Nunomad
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Old 03-07-2011, 08:45 AM
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All you have to do is look at it - if each primary pipe is necked-down for about 2 inches just before they join up, that pipe SUCKS.

And, chances are, you DO have the necked down y-pipe.

When I replaced mine with an eBay y-pipe given to me by another member, it greatly improved low-RPM throttle response. It didn't do anything else, but did make the truck more enjoyable to drive around-town.
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Old 03-07-2011, 02:11 PM
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If you have a 2 valve, you have the restrictive pipe. I replaced mine on the 03 I had, and it was much better on fuel.
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Old 03-07-2011, 02:45 PM
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Do you need to remove the exhaust manifold to upgrade the y-pipe? I don't want to mess with those studs if I don't have to.
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Old 03-07-2011, 08:37 PM
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I replaced the necked down Y pipe with the stainless Y from SPD, two years ago and couldn't be happier with the performance, less a tune from 5 Star. There wasn't much noticeable gain in MPG but the performance gain was well worth it. No need to remove the exhaust manifold to install but loosening the stock Y from the left manifold after cutting helps in installation BSEG.
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Old 03-08-2011, 08:47 AM
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Quote:
Do you need to remove the exhaust manifold to upgrade the y-pipe?
No.

Only downside to replacing the stock y-pipe with an SPD (or similar) is you will get flutter if you have the stock exhaust manifolds.
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Old 03-11-2011, 06:59 PM
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Quote:
Originally Posted by dkf View Post
No.

Only downside to replacing the stock y-pipe with an SPD (or similar) is you will get flutter if you have the stock exhaust manifolds.
Thats true! I replaced mine with the spd y-pipe, and now have a LOT of flutter. Oh well. Maybe time for some ebay headers?
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Old 10-29-2012, 09:39 PM
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Yes old thread, but I'm using the "search" feature, looking at buying a excursion, and first thing is the y pipe, what do u guys mean by flutter??
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Old 10-30-2012, 11:18 AM
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I put hedman y pipe and headers. See thread for info. Would recommend changing out stock and if you are blowing studs, should pull trigger and do them too if you are keeping truck.
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Old 11-01-2012, 03:48 PM
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Quote:
Originally Posted by hav24wheel View Post
Yes old thread, but I'm using the "search" feature, looking at buying a excursion, and first thing is the y pipe, what do u guys mean by flutter??
"flutter" The noise comes from the exhaust pipe outlet,this happens mostly while changing gears/shifting under hard accelleration. Sounds like a loose flap of metal vibrating deep inside the pipe.

Last edited by WestxSRT10; 11-02-2012 at 10:11 AM. Reason: added more info.
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Old 11-02-2012, 12:22 AM
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Quote:
Originally Posted by WestxSRT10 View Post
The noise comes from the exhaust pipe mostly while changing gears/shifting. Sounds like a loose flap of metal vibrating inside the pipe.
Check the torque converter inspection cover. They sometimes rattle between 1700 and 2200 RPM. Remove it and go for a ride. If the noise is gone, bend it a bit and reinstall it.
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Old 11-30-2012, 03:16 PM
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How loud is the Flutter. id hate to spend a hunsky and instalation only to be annoyed by exhaust noise. id rather not hear anything as the v10 doesnt sound too good. with my Flowmaster 70bb it sounds awesome at idle and when my wife drives off in it its not loud outside, but its loud inside the x while driving
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Old 11-30-2012, 07:44 PM
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Quote:
Originally Posted by TX03EX View Post
How loud is the Flutter. id hate to spend a hunsky and instalation only to be annoyed by exhaust noise. id rather not hear anything as the v10 doesnt sound too good. with my Flowmaster 70bb it sounds awesome at idle and when my wife drives off in it its not loud outside, but its loud inside the x while driving
The flutter is very loud and annoying that is one reason I have never changed anything from the engine to the cat.

Denny
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Old 11-30-2012, 10:56 PM
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Well hopefully it's not horrible. I got a eBay y pipe coming n a 4 inch deisel exhaust coming.
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Old 12-03-2012, 05:08 PM
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Quote:
Originally Posted by dkf View Post
No.

Only downside to replacing the stock y-pipe with an SPD (or similar) is you will get flutter if you have the stock exhaust manifolds.
yes your correct and that flutter noise will drive you crazy after a while.
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