How many Focus ST owners on here

If the recirc doesn't help with the issue pulling the cat off and taking a peek inside it could be the next thing to try as it does sound like a real possibility that exhaust gases are not escaping quickly enough.
 
If the recirc doesn't help with the issue pulling the cat off and taking a peek inside it could be the next thing to try as it does sound like a real possibility that exhaust gases are not escaping quickly enough.

Installed the recirc and it's made a massive difference. A lot of improvement on how it was and seems very much like to what it was like when I got it mapped.

When i loosened the original from the mounting points I remembered reading about sucking the pipe left of the plenum as that goes to the recirc and see if it holds when you slip it onto the tongue. It didn't, once I replaced it I did it again and it stayed on the tongue so safe to say it was shot.

Got some more turbo lag but it's boosting into the red now in 3rd and above and holding.

Theee still seems to be an issue somewhere and I will have to get the cat taken off and checked.

Also got the esp light come on first time ever. U2023 code, reset it and it didn't come back. Its to do with intercooler to turbo leak, all connections at recirc and boost solenoid were tight so I'll go over the boost hose connections again.
 
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Glad to hear that you have felt an improvement with the new recirc. The original being made of plastic and rubber I wouldn't be surprised if it was shot to be honest!

Yeah check boost hose connections and also try and see if there are any splits in the pipes also. Keep us updated with how it goes mate.
 
Glad to hear that you have felt an improvement with the new recirc. The original being made of plastic and rubber I wouldn't be surprised if it was shot to be honest!

Yeah check boost hose connections and also try and see if there are any splits in the pipes also. Keep us updated with how it goes mate.

Yeah funny thing...I installed it the wrong way. Didn't get any Instructions with it and I just watched a video when it came to install and neither of the videos were clear. So I watched an mk3 st install video and in that it said to install it so the flat edge is facing up towards the turbo. Mine was originally at the 5 o clock position.

Also asked on the group and it was confirmed it has to be facing up. So I re did it again and checked all hoses again and everything is fine. Also ordered a set of gaskets for the recirc incase I ever need to redo them.

Haven't drove it yet but will later and see how much different it is. With research into the u2023 code which lights up the esp light, a lot of people have cleaned/replaced the maf for it to not come back. It would sort of make sense with the maf because it did have a very oily k&n panel filter in it before, so will see if it pops up again.

All other hoses seem fine with no splits. One thing I did note on first start today was a rather eggy sulpher smell which went after a while of the car idling, when I was checking for air leaks. First time I've noticed it to be fair.
 
Ah that's good to know as I still haven't got around to fitting my recirc valve yet. What recirc did you go for as there are a few options with Forge, Turbosmart etc.

If it's a dirty maf sensor that would be a nice easy fix, I have heard a few people say that the oiled panel filters can contaminate the probe wire in the maf so that would make a lot of sense.

Definitely keep an eye on the cat, the sulphur smell may not be a good sign.
 
Ah that's good to know as I still haven't got around to fitting my recirc valve yet. What recirc did you go for as there are a few options with Forge, Turbosmart etc.

If it's a dirty maf sensor that would be a nice easy fix, I have heard a few people say that the oiled panel filters can contaminate the probe wire in the maf so that would make a lot of sense.

Definitely keep an eye on the cat, the sulphur smell may not be a good sign.

Turbosmart recirc. I also have an eBay special here which is a forge replica. Decided to keep as a spare should I ever need to use it or whatever.

Exhaust seems quieter. Im going to try get a moment free to check the cat properly.
 
I'm tempted by the Turbosmart as the one I have here is a Forge clone and I'm not sure I should trust it tbh.

Hopefully the cat will come off without to much hassle as you have a new exhaust so the rusty bolts should have already been dealt with!
 
I'm tempted by the Turbosmart as the one I have here is a Forge clone and I'm not sure I should trust it tbh.

Hopefully the cat will come off without to much hassle as you have a new exhaust so the rusty bolts should have already been dealt with!

Those who have installed eBay valves haven't had many problems but some have. Even the forge one had issues back in the day but I think they've been rectified now. I opted for turbosmart kompact shortie so not the 50/50 version.

Also be wary of the smaller oring, it does come off when you install it. So you really have to be careful and install it, it's easier to to not put the bracket on which holds the boost solenoid. Though I opted to keep it oem as possible, was tough but I'm one of those who's very picky like that.
 
If you do get round to replacing the cat it helps to have the right wrench/socket for removing the lambda sensor as they can be tight in there. They're also in a recess on the standard cat so access isn't great if you're trying to use a spanner on it.

21mm O2 sensor socket usually does the trick
 
I just give the ebay one a bash and see how it goes then and get a Turbosmart if I am not happy with it.

Did you make your own tool to get the job done?

For the Allen headed bolts, I got a 1/2 drive ratchet with extension. 4 or 5mm socket and I grinded a legnthy ball headed 5mm Allen key. Stuck it in the socket and did it. It's very awkward from the driver side wheel well, but possible with grazed hands.
 
Thanks Vita, much appreciated. I will try that method as that is why I have not got around to doing it as I did not have a tool that would work in such an awkward location.
 
Thanks Vita, much appreciated. I will try that method as that is why I have not got around to doing it as I did not have a tool that would work in such an awkward location.

Also to add, get a long magnetic thingymabob to get any bolts that fall or the Allen key which you've grinded down. You could get some liquid metal and put it in the ratchet bit just for that Allen key to hold it.

Just a breakdown of my experience with it,

Jack car + axel standsstand wheel off on drivers side

Just behind the hub, above driveshaft on right, you'll see a dust guard. It clips from the top, just be careful as clip is plastic, take this off to make more room.

Locate recirc valve + 3 bolts two at top one behind a bolt at bottom sort of underneath the right bolt at top.

Locate boost solenoid on right hand side of recirc valve on clip. When I removed my original to replace it was a right pain, pull up and tilt towards you to take off the metal bracket. Might be stiff at first but wiggle it left right and it should help come off. Remove boost solenoid connecter on the right. Push down on clip and pull to right of you - when you put it back push down and clip and push to left. Put wire to one side out of way.

Remove the vacc line from the right of boost solenoid using a pair of needle pliers or regular but it's awkward with regulars on the clamp. This is a pain if your vacc line was proper tight on the nipple. I had to use a heat gun to soften it up and remove. You may have to end up removing the other two, one from wastegate and the other line is to the top right of it.

Once that's all done and you have space. As you're facing the recirc, top left bolt is easy. It will be very tight when you try to remove so just gently to your best ability try undo the bolt to make sure it doesn't get rounded.

Top right you may need to use two extensions but because I'm a slim guy I could get my arm in no problem using one. Again just be careful to not round the bolts.

Bottom right I'd suggest using one as with two depending on legnth it's very tight as your hands will be getting caught between hub and strut. Do it at an angle and it should come off.

With the bolts they may seem like they're not coming out or at weird angles were you may think they're ruining their threads but they'll come out. I'd suggest if you can get them out by hand towards the end of the travel and pull a tad if you can reach them. If you can't they'll stay caught on the metal boost solenoid holder.

Remove recirc valve and then remove the vacc line to it. Metal solenoid holder should come out with it but a word of warning. You'll need both hands as the regular recirc is under spring tension, fiddly without looking. So just be wary of anything which falls into the undertray. If you can manouver it to the left of you it'll help.

Do everything back in reverse and remembering that the boost solenoid holder goes over the recirc and not between it and the turbo. Also the recirc flat edge facing the top at 12 o clockish. Also keep an eye on the gaskets in the recirc. Put recirc on first then metal gasket over it. It's really fiddly.

When doing the bolts up for the recirc do the top left one first by hand if you can reach. Then bottom one then top right. But don't thread them fully, until all are in then go round doing them equally. At end of travel once you feel like loads of force is going to be used to tighten even more, don't as they won't go anymore and you'll risk messing the thread up. You could put a bit of copper slip on them if you have any but they have blue anti lock seize on them.

The ones which come with turbosmart valve are hit and miss. I used only on as one as it had a good deep head.

There are videos on YouTube and I take no liability if you damage something as my post is just from what I experienced when doing it.

It's a pain and ive had to do it twice. Estimate 2-3hours on it. If you have any questions do post in here. All the best.
 
Thank you for taking the time to post such a detailed guide mate, that will really help to make it easier for me to do it. I will need to order a 5mm ball ended hex key to chop and make a tool with.
I will also check the YouTube videos out.

Thanks again.
 
Thank you for taking the time to post such a detailed guide mate, that will really help to make it easier for me to do it. I will need to order a 5mm ball ended hex key to chop and make a tool with.
I will also check the YouTube videos out.

Thanks again.

Before you order, I'll check tonight what Allen key it was.
 
Considering the Mk3 ST estate, and was wondering what owners real word MPG figures are like.

Currently looking at the Mk3 Octavia VRS, which should get ~35 and 40+ on a run. But these are like hens teeth to find.

I had the mk2.5 ST 5 years ago, and could get ~30 in that on the regular.
 
I've averaged about 25mpg over the winter, goes up to 28 in summer - 17ish mile commute circa 2/3 motorway and reasonably free flowing traffic.

I don't hang about when the opportunity arises so i'm sure it could be a little bit better.

Drove to bath and back in it last year, so 350mile ish stints. Averaged around 36mpg from memory

The boot is nothing like the size of an Octavia's though, albeit perfectly big enough for me with a dog cage and room for pram/buggy too.

If you need / want a car seat in the back you'll also have to keep the passenger seat quite far forward. This is a non issue in the Octavia.

I can't begin to describe how much I prefer this car to the Skoda though, despite some minor sacrifices
 
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That's brilliant, much appreciated!

Can confirm 5mm socket with 5mm ball ended headed Allen key.

On another note I rechecked every vaccum line and tightened all intercooler hoses. They were not loose but could have been tighter.

I think the maf is playing up but I don't have the correct torx 5 side bit to do it so I'll pick one up tomorrow and clean it. I say this because I got the esp failure message again with the u2023 code. It's cleared but then it becomes pending. It's only occured when I fitted the recirc valve which I find strange but it also only occurs as 6kish rpm on the two occasions I've had it. It could just be a coincidence but there are so many variables for it to be triggered I'll start with the one which could help improve performance and maybe mpg as mine is down on long journeys.

The recirc valve has made a massive difference.
 
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