28 Days and counting.....is there nobody with an answer ?

 

the best thing i have come up with is getting one of these, Air Filter Flow Intake Hose Pipe for Ford Focus C-Max 1.6 TDCi 2003-2007 MPV | eBay
and cutting the plug off the MAF and soldering some new wires on to extend the cable and fitting a cone filter, or get the MAF mapped out by someone like HDI-tuning his on this forum. i haven't had this done to mine yet as im still trying to sort out my P0238 and depollution system issue.

 

i was hoping i could pick up an aftermarket MAF extension cable as you can for some cars, mine would have been done by now if i could but cant seem to find one nor can anybody else i have asked, they have either had it mapped out or extended the cable them self. this is how one chap has done it i was speaking too. credit to neil peel for the photo.

 

Hi folks,
Very interesting idea, thank you for that, i did the same on my 1.6 hdi:

as you see in the picture, the maf sensor is not plugged, i have 3 options in mind :
1- find an aftermarket extension cable
2- solder with extension wires
3-separate the existing cable from the sheath

will follow up when i find a solution

Cheers

 

Sorry for adding on to a somewhat old thread but thank god I found someone who actually did this, I've spent months looking for some kind of results... I have a 207 HDI 16 myself and if you know the intake system on that you'll know why I've been looking. I just have a few question about doing this.

1. How difficult was creating the MAF extension as I have little experience soldering.

2. As a previous comment mentioned, we're you able to feed cold air to the filter?

3. Would it be worth it to create a custom airbox out of steel/aluminium that uses this hose to feed into the turbo to isolate the intake and keep it nice and cool?

4. Can I reuse the old MAF sensor from my car or do I need to buy a new one to work with the Ford intake hose

5. How are you adapting the pod filter to the end of the MAF?

Thanks

 

Something to keep in mind: Diesel engines like cold air in the intake. Both for power and for fuel efficiency.
Sucking up from under the bonnet, especially behind the radiator, risks having a warm air intake.

I also thought about moving the intake in my retired 307 w/ 1.6 HDi, but couldn't work it out to suck from outside, so I gave up.

 

Hi Piwoslaw

You made a good point here, will probably need some extension to get fresh air from the wheel well
by the way, i picked option 1 for the maf cable : i will solder an extension cable, easy and cheap

Cheers

 

@nbl66 now that you've had a few months to test - any noticible difference?Have you been monitoing the intake air temperature and/or boost pressure?

 

Hi Piwoslaw
I noticed a slight improvement in boost (5%maybe, maybe a placebo effect 😀) sorry i don't have the numbers since i didn't measure before

 

i managed to find someone on Facebook that makes the MAF extensions, i have gone down this route as it is easier to reverse if you want to go back to the original airbox for when it come time to sell it. i have had mine since December now and still had no codes pop up so all is well with the extension, but and i say but the ford intake i have fitted isn't the best as it isnt stiff enough to hold the filter firm and after a bit of driving the cone filter sags down near the radiator so a firmer silicone hose would be a better suit. this isnt a real big issue for me at the moment as i dont really use the car and if i do it just for a 5min run.

 

I ended up talking to HDI Tuning in Bristol and they said that it is possible to simply delete the MAF and just run a straight tube to the cold air. It does require a bit of fiddling with the ECU however but I personally haven't gotten round to doing it myself but will most likely in the new year.

Sent from my SM-G991B using Tapatalk

 

Related to that topic is it possible to relocate the stock 307 air box somehow to the same place? Having it in the back is just too damn stupid.

 

I'm planning on just doing a 180 off the back of the MAF and then a 90 into where it goes into its original inlet position, thinking about building a box but haven't decided. I'll probably make a post about doing it after I fix the misfire.

Sent from my SM-G991B using Tapatalk

 

I have 2.0 407. After working on a friend’s 308 I fully understand why this thread exists. If it was my car id be leading the battle. Changing the air filter is a performance worthy of a circus. Why we need to spend £1000s on special tools to work on Peugeots is beyond me.

Alen keys.. yep we like them.
Lets sprinkle a variety of bolts to add a little mystery…
8mm 9mm 10mm 11mm 12mm 13mm 14mm 15mm 16mm 17mm 18mm 32mm 35mm 36mm .
naaa im not feeling it.. lets puke some torx all over it.
Oh you know what? Lets make it so that everything you touch needs a laptop.
stand back iv got one! get this... plastic oil filter
So if the battery goes flat people use jump leads? Wait till you see this!🤪

 

I have 2.0 407. After working on a friend’s 308 I fully understand why this thread exists. If it was my car id be leading the battle. Changing the air filter is a performance worthy of a circus. Why we need to spend £1000s on special tools to work on Peugeots is beyond me.

Alen keys.. yep we like them.
Lets sprinkle a variety of bolts to add a little mystery…
8mm 9mm 10mm 11mm 12mm 13mm 14mm 15mm 16mm 17mm 18mm 32mm 35mm 36mm .
naaa im not feeling it.. lets puke some torx all over it.
Oh you know what? Lets make it so that everything you touch needs a laptop.
stand back iv got one! get this... plastic oil filter [emoji23]
So if the battery goes flat people use jump leads? Wait till you see this![emoji2957]

It's even more of a circus on a 207 but atleast my one most of them are either T20, 6mm hex or 8mm sockets except the oil filter housing which is metal on mine (thanks god) and is a 27mm. Luckily you can use jump leads on mine

Sent from my SM-G991B using Tapatalk

 

I like to keep a tool box in the back of my car. I looked at every set on amazon and found this. says its unavailable now... but if you can find one id recomend it (think it was £120)
It has all the stupid male and female torx bits and dosnt skip numbers in the spanners or sockets.. so your 27mm and 18mms there.

https://www.amazon.co.uk/gp/product/B07XY5L5JR/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

 

Atleast you haven't found the specialty pliers required to remove the EGR Valve (CLIC-R) that cost $80 where I live. You can usually find a basic Bahco set will do the trick, I haven't found any E-Torx on mine YET. But yeah, my airbox is a leaky bastard and now my MAF is starting to bad so it's running like a bag of spanners. That's tomorrow's project though haha

Sent from my SM-G991B using Tapatalk

 

would you believe i was tackleing that problem as you were typing that managed to get it with a hook pick. i couldnt see the damn thing tho

 

would you believe i was tackleing that problem as you were typing that [emoji23] managed to get it with a hook pick. i couldnt see the damn thing tho

A good tip, stick your phone on record with the flashlight on and then you can see what your doing through the phone screen

Sent from my SM-G991B using Tapatalk

 

Thanks to you brothers I could install another filter to my car. Thank you very much. That’s a MUST for every 1.6 hdi owners.

 

I was just 1 click away from buying this intake hose and cone filter, when I decided to go look under the bonnet one last time.
And I noticed that it is placed differently in my 1.6 eHDi ! It is not in the left-right axis, but instead is angled 45° .

Well, that's kinda not good

Any chance the C-Max intake pipe can be easily adjusted for this mod?

 

Si es que el acople es el mismo, el ángulo no debería ser ningún problema porque al menos en el que yo compré, el tubo es muy flexible...

 

OK, here is the oil feed pipe that connects my eHDi engine to the (pre-turbo) air intake:

So the main difference between this part of an eHDi and a normal 1.6 HDi is not only that it goes diagonally instead of left-right, but also that there is an additional sensor between the air intake and the rubber hose connecting to the engine.
When substituting the C-Max intake it would not be enough to connect it in place of the rubber hose, but it would have to fit on the sensor housing with the coupling.

The coupling here has a yellow plastic ring which is not part of either half, it can be easily taken off, then the 2 halves can be separated. Inside is a steel tube:

On the air intake side:

Could someone please post pics of the regular HDi's coupling, and how it looks on the C-Max intake?

 

While preparing to try to fit this intake mod to my 1.6 eHDi, I'll post pics and measurements, in case they might be helpful for others

First, the engine bay with the stock intake plumbing removed.
The external diameter of:

• the turbo housing is 52mm,
• the oil feed's metal tube is 16mm

The C-Max intake replacement's turbo side has an internal diameter of 43mm, BUT that adaptor can be removed, and the resulting 51mm diameter should fit nicely over the turbo input.

On the other hand, connecting to the oil feed will probably be the largest challenge - as mentioned in the previous post the distance and angle are for the regular 1.6 HDi, which differs from the 1.6 eHDi. The plastic socket is not the same, and after removing it the pipe on the intake has an internal diameter of almost twice that of the oil feed's metal pipe. Hopefully some rubber spacer/adaptor will work.

Next comes the temperature & air mass sensor. This, with housing, is from the eHDi's stock intake, between the air filter and turbo. The CMax intake's 68mm end should fit over the left, 62mm diameter end, while the cone air filter should fit over the 65mm end. If the direction of the air flow does not effect the sensor, then possibly turning the housing around would make a better fit.

If it ever stops raining outside, then I hope to make some progress.
Will post more pics.

 

@Pluggit thanks for sharing
in my case, the turbo air inlet hose is coming loose and sometimes gets out, how did you managed to get it stiff ?

 

Update on this mod for the e-HDi.

As I mentioned above, the eHDi differs from the regular 1.6 HDi with the position of the oil feed pipe, so I had to adapt this part of the mod: I removed the C-Max intake's oil feed pipe, and inserted the eHDi's metal tube/sensor into the intake, but wrapping that metal tube with rubber to increase its external diameter enough to make a snug fit.
Then I removed the original rubber tube which connected the metal tube/sensor to the engine, and replaced it with a cut piece of old coolant hose.

I still need to temporarily secure the filter end, so it doesn't bounce around while driving.

More permanently, I want to make a "wall" out of stiff insulation material, to separate the corner of the engine bay with the filter from the hot air from the engine and radiator.

 

Update: Indeed placing the filter directly behind the radiator is a bad idea:
I had a chance to drive with it while monitoring intake air temperature on an OBD tool. Ambient temperature was +6C and IAT was 6-7C until the engine warmed up and the thermostat opened. Once hot coolant flooded the radiator the IAT quickly rose to 20-22C. This is far from optimal for diesels, so I used a piece of coroplast to make a box for the new filter, which will allow it to take cooler air from behind the left headlight, instead of pulling hot air from the engine and radiator.

I used shiny-sided bubble wrap on the outside of the box to insulate it and to reflect the heat from the radiator:

The effect is noticeable: Now even when the thermostat opens the intake air temperature barely rises, no more than 1 or 2 degrees C above ambient while driving.

 

Hats off @Piwoslaw, the removal of the C-max intake adaptor fixed the sagging issue

 

What’s the name of the person who sells those Maf sensor extensions ?

 

What’s the name of the person who sells those Maf sensor extensions ?

It appears that @British_Bull88 found someone on FB making these, you may reach out to them asking for details:

i managed to find someone on Facebook that makes the MAF extensions

Otherwise, everyone else seems to have made the extension themselves.
Compared to other challenges I faced with adapting this to e-HDi, this was one of the least difficult.

 

So after 1 year, here is a small update:
The first thing I noticed was that the engine is a bit louder when accelerating. I got used to it and I have to ty to focus on the soundto hear it now.

A bit of oil seems to be sweating at the ends of the hose connecting the engine to the MAF sensor. Not leaking, just sweating.

Recently got the check engine light a few times, intermittent. OBD tool showed as P0102 MAF sensor issue. Took out the sensor and it was clean. Could be random and not related.

The rubber of the C-Max adaptor seems to have barely changed colour in certain spots, probably from the engine heat. Does not look serious.

Otherwise all seems good.