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Old 06-29-2019, 11:54 AM   #1
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ST header - direct bolt to a 2.0L! - $190 obo

Selling my 2.3L header. The ST package came with a sport tuned exhaust that included a high flow 4-2-1 style header with a cat built in. The header originally had a flex pipe, but we removed it and repositioned the flange to bolt up directly to an Fswerks stealth exhaust and flexpipe.

Benefits of this header are excellent mid range power, emissions legal, great tone, and no tune necessary. This will bolt up directly to any 2.0L or 2.3L duratec. Great improvement over the stock 2.0L log header.
**the pzev models have 3 bungs and will require an MIL to pass inspection as this header only has 2

The welds were done with flux core but are very solid. Rode with the flange reposition for over 3000 miles with no leaks whatsoever. Pulled from my car only to make way for the Fswerks 4-1 header.

Asking $190 obo - you pay for shipping (weighs 16lb)

Thanks for looking!

Pics:
One pic has an old flex pipe for illustration.
https://www.focusfanatics.com/forum/...ustration.html


https://www.focusfanatics.com/forum/...r-o2-bung.html


https://www.focusfanatics.com/forum/...ad-flange.html


https://www.focusfanatics.com/forum/...-contacts.html


https://www.focusfanatics.com/forum/...ower-weld.html


https://www.focusfanatics.com/forum/...9-overall.html


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Old 06-30-2019, 09:17 AM   #2
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A great oem upgrade for a 2L or earlier 23.....GLWS.
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Old 07-06-2019, 09:37 AM   #3
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I enjoy the Fswerks 4-1 headers, but honestly these headers are better in several ways. Yes the full race headers flow better and make more power, but these things really breathe well.

They have a well polished powerful sound. They make the duratec exhaust burble very prominent, without sounding like a ricer. I ran this header with the FSwerks stealth exhaust and it sounded incredible -- a perfect header to pair with a cat back without breaking windows every time you start up.

the highway drone is perfect - not at all bothersome like the race headers - wouldn't really consider it a drone.
the emissions is a huge benefit as I had to weld a high flow cat downstream of my race headers . this cat is clean from all of the angles I can see.

The car will pull strong past 6,000rpm easily with this header. make an offer!
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Old 07-26-2019, 06:29 PM   #4
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Hey there I am interested in your header.
Does it fits for the Ford Focus MK2 2,0 16V?
WE are living in Germany, can you ship it there and what will it cost?

My offer would be 150 plus all costs for shipment and taxes.
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Old 07-26-2019, 06:41 PM   #5
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A mk2 focus? Like a 2008-2011 model? Yes it should fit. Take a look at your current manifold and try to see if it has 3 O2 sensors or 2..
It’s a direct bolt if you have 2 O2’s. If you have 3, you’ll have to grab an MIL eliminator to pass inspection.

Side note.. it’s the header from the American 05 ST. The euro version is boosted (I’m sure you’re aware)
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Old 08-09-2019, 02:34 AM   #6
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very interested in this!
Starting a new job soon and will make an offer after getting some dough! BTW pretty sure my 2011 is a p-zev, so how would I use the mil eliminators without the extra bung for the third O2 sensor? I have already have the stealth exhaust and this seems like the perfect next step for a reliable (but fun) dd.
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Old 08-09-2019, 10:41 AM   #7
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Quote:
Originally Posted by It'syaboy View Post
very interested in this!
Starting a new job soon and will make an offer after getting some dough! BTW pretty sure my 2011 is a p-zev, so how would I use the mil eliminators without the extra bung for the third O2 sensor? I have already have the stealth exhaust and this seems like the perfect next step for a reliable (but fun) dd.
This is a oem '05-'07 23 st header which is a direct bolt on. If you have more then 2 o2 sensors, you'll need a tune.
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Old Today, 01:37 PM   #8
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Quote:
Originally Posted by It'syaboy View Post
very interested in this!
Starting a new job soon and will make an offer after getting some dough! BTW pretty sure my 2011 is a p-zev, so how would I use the mil eliminators without the extra bung for the third O2 sensor? I have already have the stealth exhaust and this seems like the perfect next step for a reliable (but fun) dd.
So this is something ive always wondered but never had to try because i've had a tune for a while now.
I think it could be done without a tune or changing the stock ecu -- though id recommend a tune anyways. you're gonna want to keep modding it lets be honest.

The MIL eliminators work by plugging in line between the O2 sensor and the pigtail... Which kind of leads me to believe they may need to be be screwed into a bung somewhere to act as a ground. They are used to make the ECU think that the emissions related O2 sensors are showing a good catalytic converter, even if it isnt working or removed completely.

If i had an extra O2 sensor that i didnt have a bung for, I'd buy one of these MIL eliminators, plug it in line, then ziptie the sensor somewhere safe (they generate heat on their own). If that didnt work, then I'd drill a clean hole somewhere in the exhaust, and weld a bung on to it to thread the O2 sensor into. It shouldnt matter where, as the MIL eliminator fakes a good signal from the sensor

^^ the big question is if the O2 sensor uses the exhaust as a ground in its circuitry.

link to MIL eliminators for reference: https://www.fswerks.com/collections/...atec-2003-2011
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05 Focus ST
2.5L swap, Crower stage 1 cams, cossie throttle body, fswerks 4-1 header w/ 2.5" stealth exhaust, VCT delete, BSD delete, full 3" CAI, focus power 93 octane tune, trans and rear motor mounts, Motorcraft SP-463 plugs gapped to 0.055"

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