Eolys Rip Off

cachaciero · Post by **cachaciero** » 10 Sep 2010, 15:31

Just done a bit of Patent research interestingly Rohdia have a patent on the whole exhaust FAP system applied for in 1999.

cachaciero

Post by **myglaren** » 10 Sep 2010, 15:36

If you just add diesel to the Eolys tank without removing the FAP filter then the filter will clog up fairly quickly as it needs the Cerium to reduce the combustion temperature of the carbon particles to be burned off in the filter.

JohnD · Post by **JohnD** » 10 Sep 2010, 16:34

Clogzz wrote:Think to have read on a French site to put diesel in the Eolys tank.
:

You're right - I've seen that - but it's b*******. What would be the point in having the ecu inject 30mls of diesel into a just-filled diesel tank - and the FAP system work as it should?

Kowalski · Post by **Kowalski** » 10 Sep 2010, 18:08

JohnD wrote:
Clogzz wrote:Think to have read on a French site to put diesel in the Eolys tank.
:
You're right - I've seen that - but it's b*******. What would be the point in having the ecu inject 30mls of diesel into a just-filled diesel tank - and the FAP system work as it should?

If you remove the FAP, the system doesn't need any Eolys.

Homer · Post by **Homer** » 10 Sep 2010, 21:32

Kowalski wrote:
JohnD wrote:
Clogzz wrote:Think to have read on a French site to put diesel in the Eolys tank.
:
You're right - I've seen that - but it's b*******. What would be the point in having the ecu inject 30mls of diesel into a just-filled diesel tank - and the FAP system work as it should?
If you remove the FAP, the system doesn't need any Eolys.

But then you would still need to tell the system that there was no FAP, in which case it won't try injecting Eolys, in which case you don't need anything in it's tank.......

......I think.

Clogzz · Post by **Clogzz** » 11 Sep 2010, 11:37

I’ll try digging up the story to find out what exactly they did.
The purpose was to fool the system into believing that it was functioning normally.
There was no preoccupation with emissions.

JohnD · Post by **JohnD** » 11 Sep 2010, 16:48

Rooting around in the garage this morning I've come across a few 1oz canisters of Cerium oxide. Anybody fancy concocting some home brew Eolys?

cachaciero · Post by **cachaciero** » 11 Sep 2010, 17:16

JohnD wrote:Rooting around in the garage this morning I've come across a few 1oz canisters of Cerium oxide. Anybody fancy concocting some home brew Eolys?

Ah! well al we need now is some iron oxide and paraffin and we are away.... lets see yes I have a few bits and pieces which need the rust grinding off I think maybe together we could have the ingredients for DIY EOLYS, however..........

In my case the low level thermistor looks like it's shot in which case the car is going to get de-fapped so there won't be a need.

cachaciero

JohnD · Post by **JohnD** » 11 Sep 2010, 18:37

cachaciero wrote: al we need now is some iron oxide and paraffin

Surely diesel could act as the 'vehicle'.

But why is this: I used Cerium oxide as a polishing compound on stone; therefore it must be abrasive. In fact Cerium and T-cut are both the same colour, so cerium might be the active ingredient in T-cut. Wouldn't that be damaging to the fuel pump?

I see the Eolys on ebay went for 29quid per litre. But I wonder where it came from? Maybe the same country as many of our Lexias.

MikeT · Post by **MikeT** » 11 Sep 2010, 18:58

Forgive me if I'm misunderstanding but isn't it possible to fool the ECU using resistors in place of the pressure sensors, allowing removal of said FAP without flagging a fault or causing limp home mode? I think fuel is expensive enough without having the need to add, what must be some of the most expensive liquid known to man?

kenhall1202 · Post by **kenhall1202** » 11 Sep 2010, 19:00

This Romanian site http://www.phones-direct.ro/public/fapsensor/index.html has some interesting projects re DPF monitoring and DPF system removal. I contacted him (he's already an FCF member I think) last year with a view to buying a DPF monitor for my C4 (~£30) but for whatever reason he couldn't supply to the UK at the time. I'm asking him again just now -awaiting a reply.

cachaciero · Post by **cachaciero** » 11 Sep 2010, 22:06

JohnD wrote:
cachaciero wrote: al we need now is some iron oxide and paraffin
Surely diesel could act as the 'vehicle'.

But why is this: I used Cerium oxide as a polishing compound on stone; therefore it must be abrasive. In fact Cerium and T-cut are both the same colour, so cerium might be the active ingredient in T-cut. Wouldn't that be damaging to the fuel pump?

I see the Eolys on ebay went for 29quid per litre. But I wonder where it came from? Maybe the same country as many of our Lexias.

Indeed one of the uses for cerium oxide is as an optical polish. Damaging to the fuel pump well I am not a chemist but I suspect that would depend on particle size and how it was bound to the carrier liquid, this may all be down at nano sizes.

cachaciero

cachaciero · Post by **cachaciero** » 11 Sep 2010, 22:12

MikeT wrote:Forgive me if I'm misunderstanding but isn't it possible to fool the ECU using resistors in place of the pressure sensors, allowing removal of said FAP without flagging a fault or causing limp home mode? I think fuel is expensive enough without having the need to add, what must be some of the most expensive liquid known to man?

In a word yes and in another recent thead on FAP removal I have said that it just requires that the FAP dif sensor be replaced with a suitable network of resistors fitted in place of the diff pressure sensor to simulate the pressure drop of a "clean" FAP.
This should work fine unless the software in the ECU is clever enough to work out that a constant diff pressure for all rev ranges is an error, I would work on the basis that it isn't

cachaciero

cachaciero · Post by **cachaciero** » 12 Sep 2010, 20:39

Just an oddball thought, assuming that a 50mm dia exhaust pipe is adequate a completely choked FAP would need 25 10mm dia holes drilled in it to equal the cross sectional area of a 50mm dia pipe but as the walls of these holes would be rough the conductance would be lower than an equivalent pipe so the pressure drop may be enough to fool the sensor into believing it has a good FAP of course a completely blocked FAP is unlikely so maybe 24 holes would be enough.....??

cachaciero

woodywoodpecker · Post by **woodywoodpecker** » 12 Sep 2010, 23:08

cachaciero wrote:
Paul-R wrote: You might be the first one to take the plunge though.
No I won't be the first I have read in other fori of others that have done it. There are "several "system Approaches" to removing it but the one thing I would like to be able to do if possible is to remove the ceramic element complete because as I said I do think that the use of a FAP is an environmentally friendly thing to do and if in the future it should be that the required bits from a broken 2004 on car became available I might want to re-instate it.

cachaciero

I have removed my fap and cat on 2.2 c5 hdi 2004, and all i can say is you will not re-instate it after you have drove your car without it. i have a lexia but this is not used to remove it from the ecu you need a galletto cable to read your ecu file to laptop, Then run your file through software that removes all reffrences to the dpf and Eolys from the ecu. Once the modded ecu file is done simply write it back the ecu then take the dpf and cat off exhaust and smash the guts out of both and refit to car. I have done 3000miles now and my car pulls like a train no black smoke 4-5mpg better fuel and flew through mot. total cost for me was £25 for cable and 3hours of my time to remove and refit exhaust. This also dissables the Eolys additive from working so no more dpf or Eolys to worry about again. Did a mates peugeot 406 2.2 hdi yesterday he can't believe the difference in performance. Any more info or help just mail me.