Why the heck did the factory crush the mid pipe on driver side??? - Mustang Evolution

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Old 07-10-2014, 05:10 PM   #1
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Why the heck did the factory crush the mid pipe on driver side???

Wow, installing mufflers today and looking up underneath a car behind the factory X pipe the driver side exhaust pipe is flat and big time for about 2 feet. What the heck is that about? And is there any reason to go ahead and replace that section of pipe with a round pipe instead of this silly crushed flat pipe???

I do not see any clearance issues whatsoever! What the heck is it all this all about, why is it flattened out? Any reasonable gain replacing that section of pipe??
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Old 07-10-2014, 05:32 PM   #2
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Old 07-10-2014, 05:38 PM   #3
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Might be causing some airflow restriction if it's really that bad.
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Old 07-10-2014, 05:45 PM   #4
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Same thing on the gt's pipe smashed and resonators smashed. I replaced with borla ota's

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Old 07-10-2014, 06:08 PM   #5
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I've asked myself the same question.
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Old 07-10-2014, 06:23 PM   #6
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I cant find the answer yet, but it was answered last year here and it was a reason behind it.

This is not the answer but could be one, "look at your long term fuel trims and they should balance. This is due to air flow on left and right banks from intake to heads to exhaust. If the drivers side is flowing more then the passenger side due to an engineering design, then smash the pipe on the drivers side to make the match and keep the engine banks in balance"

Now replace that with a round pipe and now bank 1 and bank 2 long term fuel trims could really be far out like 20 points or more. Look up long term and short term fuel trims, you need to know about them if you mod and tune.

SO this was all just imagined theory not the answer.
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Old 07-10-2014, 06:33 PM   #7
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Fords got their hands in the aftermarket world. They know what to do to make us spend money. Bad shifter bracket, crimped exhaust, big factory mufflers, tiny manifolds, 2:73 gears, mild tune, etc


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Old 07-10-2014, 06:36 PM   #8
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Originally Posted by Bigshow14 View Post
Fords got their hands in the aftermarket world. They know what to do to make us spend money. Bad shifter bracket, crimped exhaust, big factory mufflers, tiny manifolds, 2:73 gears, mild tune, etc


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The must get kick backs. LOL

I wouldn't be surprised if flowmaster was their muffler supplier.
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Old 07-10-2014, 07:32 PM   #9
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I cant find the answer yet, but it was answered last year here and it was a reason behind it.

This is not the answer but could be one, "look at your long term fuel trims and they should balance. This is due to air flow on left and right banks from intake to heads to exhaust. If the drivers side is flowing more then the passenger side due to an engineering design, then smash the pipe on the drivers side to make the match and keep the engine banks in balance"

Now replace that with a round pipe and now bank 1 and bank 2 long term fuel trims could really be far out like 20 points or more. Look up long term and short term fuel trims, you need to know about them if you mod and tune.

SO this was all just imagined theory not the answer.
Hmmmmm, got a hypothetical question for you then, I had resonators installed and then removed and that section of pipe was replaced and now is straight like the passenger side and not crimped anymore, any thoughts on potential long term problems because of it?

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Old 07-10-2014, 07:49 PM   #10
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The must get kick backs. LOL

I wouldn't be surprised if flowmaster was their muffler supplier.
Naaaa, look at it this way, BORLA is the maker of the GT500 muffs and makes the Ford Racing Touring and Sport Axle back Muffs.....
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Old 07-10-2014, 07:57 PM   #11
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Hmmmmm, got a hypothetical question for you then, I had resonators installed and then removed and that section of pipe was replaced and now is straight like the passenger side and not crimped anymore, any thoughts on potential long term problems because of it?
Anyone doing mods should get a bluetooth OBDII dongle from Amazon ~$20 and Torque $5 for your smartfone to view and log data and give you real time display what your game box of a car is doing for less than $30

If you make mods and don't have tunes changed, stuff can happen, not always but if you look to see ,you can make sure stuff dont happen. Learn how the motors work and how the real tuners can help you, learn to see what your motor is doing for you.

Are you logging your data now in any way?

Art
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Old 07-10-2014, 08:30 PM   #12
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Originally Posted by ArtU View Post
Anyone doing mods should get a bluetooth OBDII dongle from Amazon ~$20 and Torque $5 for your smartfone to view and log data and give you real time display what your game box of a car is doing for less than $30

If you make mods and don't have tunes changed, stuff can happen, not always but if you look to see ,you can make sure stuff dont happen. Learn how the motors work and how the real tuners can help you, learn to see what your motor is doing for you.

Are you logging your data now in any way?

Art
Which dongle do you recommend? Ive been looking into doing that but I couldn't find the info on which to get and what app to use with it
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Old 07-10-2014, 08:33 PM   #13
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Quote:
Originally Posted by ArtU View Post
Anyone doing mods should get a bluetooth OBDII dongle from Amazon ~$20 and Torque $5 for your smartfone to view and log data and give you real time display what your game box of a car is doing for less than $30

If you make mods and don't have tunes changed, stuff can happen, not always but if you look to see ,you can make sure stuff dont happen. Learn how the motors work and how the real tuners can help you, learn to see what your motor is doing for you.

Are you logging your data now in any way?

Art
No I'm actually not. Should I start?

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Old 07-10-2014, 08:36 PM   #14
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I feel like I have stepped back into 2011 with this question.
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Old 07-10-2014, 08:43 PM   #15
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I really cant recommend one, but I have tried 4 out and this one give me the less trouble. Issue is the BlueTooth serial number is the same on all of them, and so you cant have a few of them close together all working at the same time.

Perfect versions cost about $99 , these are cheap Chinese knock offs. That in mind, if they work and log,they wont change your data, all they are is the same as a cable between your TV and computer, they either work or not.

On Amazon:
Vgate ELM327 v1.5 Bluetooth Mini Small Interface OBD2 Scanner Adapter Torque Android

You use the "Torque" app with them. Others on this forum might have better suggestions for the Blue Tooth dongles, I have used 3 of them so far in my 2 mustangs, and Truck. (Yes I left the OBDII dongle in the port when I traded it, I just forgot)

Ok now you say 4 units but 3 of the Vgates, The first unit OBDII dongle I tried: ELM327 Bluetooth OBD-II Wireless Transceiver Dongle Scanning Equipment...Had new serial numbers for each unit, but it was flaky and required me to reset it almost every time I started the car, sometimes 2 or 3 times before it would work and got to be a real buzz kill fast.



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Old 07-10-2014, 08:50 PM   #16
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I did not modify the mid pipe, but did install mufflers only today, and new tips.

Wow it sounds good! Not raspy like so many systems out there, nice and deep, definitely close enough to pass for V8 sound in most anybody's book, unless a total motorhead geek like most of us are, LOL, but would definitely fool 98% of most any crowd.


Magnaflow Competition Mufflers part number 14415 that are 14 inch round body, 2.25 in and out, along with with Different Trend 24113c Polished Stainless 4 inch double wall slant beveled cut tips that just could not look any better.

I could not be happier with how looks, how it sounds, and how it all turned out!


Thanks to all who pitched in with great info, many thanks!


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Old 07-10-2014, 09:01 PM   #17
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Kewl, that is what counts, sounding very good. My past V6 I put Borla Stingers on it, on one grass car show I pull into a new GT guy asked how to make his GT sound as good as mine. First I tell him, you have to look at this, and he asks how did you fill in the hood vents? I say I didn't open the hood and he says that sound is from a V6?? Yes a V6 with good muffs sounds better then a stock GT.

BUT, next month the GT guy had Borlas and he was really rad sounding!

So when I got my 2013 GT/MT82 , I put Borla ATAKs on it, I didn't want those ATAKs on the V6 as they would be "too" V6 sounding. If you get the Ford tuned V6 exhaust too open and free flowing... it sounds like F1 V6 sounds...Ford did computer work to get the V6 to sound as good as it does....HUmm..Yea..is that why????

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Old 07-11-2014, 05:50 AM   #18
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BTW since someone said they were back in the 2011 discussion but still did not give the reason, it is flattened out to change the pipe so the left and right sides are different to change resonance and not get drone.
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Old 07-11-2014, 09:10 AM   #19
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idk why they did but it was for a reason...crushing a piece of pipe is an extra step. I would guess resonance is the correct answer though.
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Old 07-11-2014, 09:11 AM   #20
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Should I crush a piece of my Borla/FR x pipe? Lol


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Old 07-11-2014, 10:50 AM   #21
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I've asked myself the same question.
And what answer did you give yourself?
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Old 07-11-2014, 11:04 AM   #22
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I have a 2013 GT and my resonators are the same way. the guy who installed my exhaust called me over to show me them before he proceeded so I would know it wasn't on him. They are evenly done, it has to be that way factory. Not sure why though.
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Old 07-11-2014, 01:21 PM   #23
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BTW since someone said they were back in the 2011 discussion but still did not give the reason, it is flattened out to change the pipe so the left and right sides are different to change resonance and not get drone.
This is a good explanation.

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Old 07-11-2014, 05:55 PM   #24
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Check it out

If the smashed pipe is the same inside diameter as the round pipe. There will not be any difference in flow.
They probably did it for the assembly line or transportation.

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Old 07-11-2014, 10:11 PM   #25
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Really?
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Old 07-12-2014, 12:13 AM   #26
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Ohh Come on Dan, you know the farkin' reason as you were the one last year tellin' us, Fark it Over Now

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Old 07-12-2014, 09:25 AM   #27
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Hey Dan

Cool dog,
Did the Dog take that "SELFIE"????

It is a known fact that if the inside dimensions of the pipe are the same at the flattened or square part of a pipe that the round pipe has it will flow the same.

It seems that Ford needed to do that to clear something on the assembly line.
Ronnie

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Whats the dogs name? Boy or Girl? You probably know i like dogs a lot.
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Old 07-12-2014, 05:46 PM   #28
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...
Whats the dogs name? Boy or Girl? You probably know i like dogs a lot.
Yes Ronnie, you have a very Cool Corgi
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Old 07-13-2014, 04:13 PM   #29
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I meant really as in are we really having this convo again.
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