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Discussion Starter · #1 ·
Has anyone installed a stock ST exhaust on their 1.0 car and if so do you have a video of how it sounds? I want a little bit of sound out of the exhaust but still fairly quiet. The stock exhaust on our cars is practically silent!
 

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I confirmed yesterday that an ST exhaust is NOT a direct fit. The mid pipe is 4 inches shorter than the stock exhaust. It can be made to fit but not sure its entirely worth the money. I also have the FRPP Borla exhaust too. The upside to my experiment is that I had all three exhausts side by side to do a comparison. To my surprise, the ST tubing is larger than the Borla! I put my cheapie mic on it in different locations and it seems to be an odd size of 2.2 inches or 55mm. The Borla is 2.0" and the stock 1.0 is 1.8". I am running no muffler for now. Its not too loud but I will be putting a small straight through or run resonator tips. BTW, the stock muffler is quite porky.

FYI - In the first picture, I do have the pipes matched up so you can see the 'shortage' of the Borla which is of course the same length as the ST. The subsequent pictures simply show the pipe diameter differences. They are not matched up in length

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I'm guessing that your stock exhaust is off a sedan. Sedans have a longer profile to the bumper. I believe that someone in another section of the forum had this fixed by extending the tips. Pretty simple work for any exhaust shop.
 

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I'm guessing that your stock exhaust is off a sedan. Sedans have a longer profile to the bumper. I believe that someone in another section of the forum had this fixed by extending the tips. Pretty simple work for any exhaust shop.
I have a hatch. Assuming you saw the pics above, this has nothing to do with the longer profile of a sedan. As stated above, it is the mid-pipe that is shorter. This is the pipe that connects to the downpipe. Technically, the 1.0 has a short 8" or so connector from the downpipe to the mid pipe (I did not capture a pic of this when under the car). I was hoping that Ford designed this short connector so that the rest of the exhaust would line up to the 1.6 NA and Turbo and reduce setup costs for the 1.0 exhaust. However, it does not.

As for making it fit, sure it most certainly can be done. Doing it right by welding an extension in would prob cost about $100 in my area of California. If you weld yourself, than it should be easy and super low cost.
 

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Discussion Starter · #5 ·
I confirmed yesterday that an ST exhaust is NOT a direct fit. The mid pipe is 4 inches shorter than the stock exhaust. It can be made to fit but not sure its entirely worth the money. I also have the FRPP Borla exhaust too. The upside to my experiment is that I had all three exhausts side by side to do a comparison. To my surprise, the ST tubing is larger than the Borla! I put my cheapie mic on it in different locations and it seems to be an odd size of 2.2 inches or 55mm. The Borla is 2.0" and the stock 1.0 is 1.8". I am running no muffler for now. Its not too loud but I will be putting a small straight through or run resonator tips. BTW, the stock muffler is quite porky.

FYI - In the first picture, I do have the pipes matched up so you can see the 'shortage' of the Borla which is of course the same length as the ST. The subsequent pictures simply show the pipe diameter differences. They are not matched up in length
Thanks for the info!
 

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I want to fabricate an exhaust for my ecosport which has the 1.0 ecoboost engine. can someone tell me the pcd of the holes for the exhaust flange please

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Out of curiosity, when you measured the exhausts, did you measure the inner diameter or outer diameter of the pipe? I know since Borla uses 300 series stainless, they can use less material to create the same inner diameter than if another pipe used mild steel to have the same inner diameter and strength.

Maybe you are correct and the stock ST really is larger, but I thought I would just confirm because I’m curious if the extra 0.2” was because the outer diameter of the ST pipe was more.
 

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Got a ST exhaust from CL for $100.00. Local Tuffy shop is mom & pop franchisee with hotrods in and out all the time. Another $100.00 and I get a little bit more noise, little droning, but don't think anything of a "performance" advantage. I usually "wrench" on my cars and bike unless I need a lift. The Ford dealership I take my car to for $5 DOLLAR OIL CHANGES w/ FILTER EVERY 5000 MILES got a kick out of the "note" it made when the service mgr. pulled it in to one of the bays..
 

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I confirmed yesterday that an ST exhaust is NOT a direct fit. The mid pipe is 4 inches shorter than the stock exhaust. It can be made to fit but not sure its entirely worth the money. I also have the FRPP Borla exhaust too. The upside to my experiment is that I had all three exhausts side by side to do a comparison. To my surprise, the ST tubing is larger than the Borla! I put my cheapie mic on it in different locations and it seems to be an odd size of 2.2 inches or 55mm. The Borla is 2.0" and the stock 1.0 is 1.8". I am running no muffler for now. Its not too loud but I will be putting a small straight through or run resonator tips. BTW, the stock muffler is quite porky.

FYI - In the first picture, I do have the pipes matched up so you can see the 'shortage' of the Borla which is of course the same length as the ST. The subsequent pictures simply show the pipe diameter differences. They are not matched up in length

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I dunno. I say that too much, but as I get older ... You can just take your pipe down to your local muffler shop and have them add 4" to your pipe. Its simple for them and should be pretty cheap.

I may have missed something but after making headers work on a few cars, that does not look like a problem to me.
 

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I dunno. I say that too much, but as I get older ... You can just take your pipe down to your local muffler shop and have them add 4" to your pipe. Its simple for them and should be pretty cheap.

I may have missed something but after making headers work on a few cars, that does not look like a problem to me.
My original post was from 2015. Anyway, yes anything can be fabbed up. The section that is a mismatch is the mid pipe. It’s not that it is simply short but rather it is a different configuration and short as well. Has nothing to do with tail pipe lengthening. And yes any muffler shop can do the work as long as you have your car present as they will either need to make a newly configured connector or cut of the flange of the 1.6 exhaust and weld in a connecting piece. The point of my original post was that it is not simply a bolt-on as I was the first to try it. Done my fair share of custom setups over the years :)


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I installed a stock Fiesta ST exhaust to my 1.0 Sedan. Well, not completely stock because I deleted the resonator and extended the system to the downpipe.
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The tips also had to be extended from the muffler to make it past the bumper.
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I am extremely pleased with the results.
 
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