Hi, I will need to get modified elm327 plus adapter leads, will the free version of multiecuscan be enough to do a forced regen do you know?

Not sure, I did it the other way got the free version, got an unmodified elm3, nothing worked, so paid for ecu multiscan ,still not working so got modified elm3.

I've installed new pre cat, found one of the BM catalyst ones on offer on eBay for £100 plus extra 20% off eBay Christmas offer!
I've ordered elm and leads, for now I'll just see how it goes, due a regen Friday/Saturday. I'm keeping the live mpg on while driving because I won't know if a regen is taking place if there is no smoke! I've measured external temp of pre cat now and it's 128°. The pic is of my old pre cat

Did you swap it out yourself or was it a garage job?
Ebay are doing genuine fiat precats for £98.00 plus £11 postage, so let me know if that sorts it, thanks.

Hi can you put some external photos on the forum so I can check I am looking at the correct part should be fiat part no 71746626

233356812305. EBay item number.
This is the part I bought and it fits my vehicle, I don't think I've mentioned, mine is a doblo 120 1.9 multijet 8v. So your pre cat could be slightly different.
I swapped it myself btw.

Different part number but similar other than the bracket.
What was involved in stripping it out and what access did you have to remove it?
Did it take long? thanks

Yes it looks the same, the bracket is on my vehicle and the cat didn't come with one so i used the existing one.
First thing to do once the cars on ramps or stands is see if you can get access from underneath to the the clamp holding the cat inlet to the turbo so you can loosen the nut. If not it's a bit of a pain and you have to remove the heat shield from around the manifold.
The 3 bolts on the other section of mine were stuck, so hammer and chisel job.
Without any stuck bolts and if access is easy to the top clamp it shouldn't take more than one hour

Also, had regen today,,,, no smoke! Much appreciate you starting this thread otherwise there is nothing anywhere to indicate that this is causing the smoke.

GOOD news, what happened with the regen, did it smoke at all? I would expect the distance to increase to 4-600 miles, but brilliant, I will order my own and give it a go, cheers and a merry christmas.

I didn't notice it first kick in, was on motorway, but no smoke at all when I noticed that the live mpg had dropped from 48ish to 24ish, no smell of post burnt fuel. I'll do a forced regen when the elm and adaptors arrive.
Merry Christmas to you too!

Hi, remember to initialise data on the precat once you get your ELM, this from the manual.

Hi, yes I did that soon as I got elm, that was 2 days after fitting pre cat. At that point it had just done the first regen and was showing Dpf 32% clogged.
I plugged elm in yesterday, Dpf showing 78% clogged. I was on motorway today and noticed another regen by mpg drop, no smoke. That's the first one since resetting the precat, just over 200 miles since last regen.
I've attached a couple of pics that I took on my phone of these readings, a bit blurry I'm afraid.

Looks like your problem is solved, I have received my precat, so waiting for a nice day to fit it, did it come out through the bottom of the engine or lift through the top? Where does the precat sensor plug into the wiring harness?

Precat is removed from underneath and the sensor plug is just by the side of it.

had a short regen tonight @ 134miles, smoke and strong fuel smell (not yet fitted precat) but as soon as it completed the oil warning light started flashing., stopped enging and let it sit, restarted light was off, i drove 5 miles to garage and topped up with 1 ltr oil, drove round a roundabout light started flashing, oil level high (probably fuel in oil), light was off as i drove home.

Anyone got an opinion, its about 2000 miles since oil n filter change.
I am thinking contaminated oil and thinned out with diesel (so low oil pressure), so I will change it tommorrow and see.(or prhaps bad contact on oil sensor??)

Oil was like water, thin, full of diesel, fitted precat but bother getting the turbo side brass clamp in place, i will have to stip front of turbo to gain access.

Yes I had difficulty getting that in place, in fact it's developed a slight leak from there and I'm going to redo it when I have a chance

I purchased a new clamp and gasket but it is narrower than the original which makes it more difficult.
Did you reuse the original?

Reusing original clamp with new metal gasket, but no access withour removing the heat shield (which I will do tommorrow) and get it in place and tightened then see how it runs.
My old precat looks in good condition sooty on inlet side (from engine) but filter clean on outlet, filter looks unmarked,. So I will see how it goes.
Oil was very thin and contaminated with diesel.