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Good Or Bad Idea to Cut out the Stock Y Pipe ?

Old Jan 10, 2010 | 12:55 PM
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Default Good Or Bad Idea to Cut out the Stock Y Pipe ?

Was told it was a bad to cut out the stock Y pipe. And that i would be getting the check engine light and lose some top end.

Is this true or his a dbag

going to get a dual in and dual out magnaflow muffler going to run it dual from the cats in to the muffler

so is this good or bad idea ?
 
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Old Jan 10, 2010 | 01:07 PM
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if you are going true duals you will need an X or H pipe to balance your system out. the stock Y is very cheesy and restrictive, i cut mine out and had an exhaust shop fab me up a new less restrictive one. worked out nicely.
 
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Old Jan 10, 2010 | 01:12 PM
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will his a dbag then also wanted to charge 450 to run it how i wanted and just dump it i was like called some other shop told them how i wanted it theyll do it for 150

but the muffler has a x inside or should i still get the h put in ?

this is the muffler im going to be getting http://www.magnaflow.com/02product/s...e=main&id=8278
 
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Old Jan 10, 2010 | 02:01 PM
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I'd find another D-bag! Cutting out any "Y" pipe would not cause a CEL. And getting rid of ANY restriction would INCREASE mid and top end performance. The ONLY loss could conceivable be in low end torque as this move would reduce back-pressure.

So not only is he wrong, he's dead f*ckin' opposite wrong...


I agree with John, I'm from the camp that says there should be a balancing of exhaust gases somewhere in the system. Many run "true duals" with no reported problems, but I was tought that you needed it. Been doing it that way since I was 16 and I'm gonna be 43 in a couple weeks. No problems, ever.

I've used better flowing, shorter "Y"s and "H"s myself, as well as simply joining them inside of a 2I/2O muffler. Only thing I've never installed myself is an "X". I think you'll be just fine if you only use the muffler to blend the exhaust gases...
 

Last edited by HammerZ71; Jan 10, 2010 at 02:05 PM.
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Old Jan 10, 2010 | 02:10 PM
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What Hammer said. I am an H-pipe kinda guy myself, but using the X muffler will pretty much do the same thing in your case since the left side will be longer than the right anyway, it will help balance out the system.
 
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Old Jan 10, 2010 | 02:33 PM
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Do a search for photos of the stock y and you will see why it is a good thing to remove it. The factory just crushed the two stock pipes together to form a y, very restrictive.
 
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Old Jan 10, 2010 | 02:50 PM
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Aftermarket Y vs stock Y-

Name:  Y-PipeCrossSection.jpg
Views: 668
Size:  62.1 KB

Another shot of the stock Y-

Name:  StockY-Pie.jpg
Views: 611
Size:  70.2 KB
 
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Old Jan 10, 2010 | 02:59 PM
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Tell the one shop he's a moron and go somewhere else. The stock Y is VERY restrictive (look at frogs pics). Either replace it with something better (magnaflow makes a nice replacement) or go duals with an X or H pipe.
 
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Old Jan 10, 2010 | 03:27 PM
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ditch that bitch and then get someone else to replace your y-pipe. my local muffler shop did all of my set up for 60.00. y-pipe, muffler, dump
 
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Old Jan 10, 2010 | 04:07 PM
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Why in the hell is every one on this x pipe or h pipe kick?

Thier is no room on a 4wd hemi to do this, I have never seen a h pipe or x pipe on a 4wd hemi, and you never will.

on a car with no transfer case, or flue tank in the way, yes H pipe or x pipe is the way to go.

the only time you get a check engine light will be if you remove the 02 sensors, OBD2 emissons, removing the y pipe is not going to do this, but, depending on where the 02 sensor is in the y pipe, it may need to be removed and re tapped.

I run true duals, no y pipe, no x pipe, no H pipe and no check engine lights, no loss of back pressure, more torque, more power, and more mpg.

If your not going to tow, if you have a daily driver, don't play with the stock ex sytem, leave it alone, it will take time to get back your investment in mpg saving's and thiers a crap load of wrong muflers and bad mufler shops out thier.

My current muflers are holding up, but I blown out mnagna flows, dynomax x ultra flow muflers, DO NOT use one mufler with two inlets, two outlets, run two muflers.

on the stock hemi, the y pipe, un equal length of the left and right ex manifolds are designed to be 100% inperfect for ex flow.

It will educate you to look under your truck and come to your own conclussions abought what to do and not what to do.
 
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