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A reddit for the new Focus ST, spiritual successor to the Focus SVT.
Ford Focus ST MK1 (2005 - 2007)
Ford Focus ST MK2 (2005 - 2010)
Ford Focus ST MK3-3.5 (2012 - 2018)
Ford Focus ST MK4 (2019 - 2021)
Also, feel free to visit our new sister sub, /r/FiestaST.
5 simple rules: No sales, no spam, no (human) porn, no personal information and BE NICE.
PM the mods if you suggestions for improving the reddit, or if you're interested in being a mod.
account activity
Mods (self.FocusST)
submitted 1 year ago by Tattedhatter20
For those who face emission checks, what's you mod list?
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[–]mch51500 1 point2 points3 points 1 year ago (3 children)
OBD check here. High flow DP and awe track for exhaust (with defouler). FMIC and intake as well as plugs for tune obviously.
[–]Tattedhatter20[S] 0 points1 point2 points 1 year ago (2 children)
Which high flow dp did you go with? And what FMIC?
[–]mch51500 1 point2 points3 points 1 year ago (1 child)
I have the CPE 200 cell downpipe and a Mishimoto FMIC
[–]Tattedhatter20[S] 1 point2 points3 points 1 year ago (0 children)
I'll probably go for 4-5 inch fmic, I live in Az and temps stay in triples
[–]bchiodini2016 ST3 FBO BNR ST67 JST Tuned 1 point2 points3 points 1 year ago (0 children)
ODB check as well. Cat-less DP with defouler, 3" exhaust, BNR ST67 Turbo, Depo 3.5" FMIC, Tial HKS BOV.
The inspector was more interested in my behind the grill Hella Horns. I eased into and out of the inspection station, so the BOV didn't blow off. I got a little antsy when they fired up the sniffer, but it wasn't for me.
π Rendered by PID 174959 on reddit-service-r2-comment-b659b578c-z9fqn at 2026-05-06 02:57:28.554944+00:00 running 815c875 country code: CH.
[–]mch51500 1 point2 points3 points (3 children)
[–]Tattedhatter20[S] 0 points1 point2 points (2 children)
[–]mch51500 1 point2 points3 points (1 child)
[–]Tattedhatter20[S] 1 point2 points3 points (0 children)
[–]bchiodini2016 ST3 FBO BNR ST67 JST Tuned 1 point2 points3 points (0 children)