highlander wrote:OK, so don't destroy the FAP - remove it and replace it with a section of pipe - if it fails the next MOT on emissions, then you can put the FAP back in. Then swap over again as soon as you get home from the test centre
I could do that, but in the test centre they usually look for the FAP under the car, so I should replace it with a similarly shaped pipe or with an emptied FAP. 406s are not so common here and I haven't been able to locate one (whichever engine) in a scrapyard in two months.
Too much hassle! In the summer I'll remap it (if I sort out the current ignition problem) and then I'll just let the cerene finish and then think about it.
2001 2.2HDi saloon Executive (not the English exec, worse!) in Obsidian Black. Semi-Mux D9, build code 8761
Want a remap? Contact us, learn to do it yourself on ecuedit.com or let the professionals of editecu.com do it for you!
Or pick up a second-hand one on eBay, a little delicate adjustment with a BIG hammer and then you can exchange the FAP & noFAP units + software, in about an hour.
2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
dogslife wrote:Or pick up a second-hand one on eBay, a little delicate adjustment with a BIG hammer and then you can exchange the FAP & noFAP units + software, in about an hour.
If used ones aren't too expensive... I could do that.
Is it easy enough to remove the FAP without having to lift the car with particular tools?
plod wrote:Seen some FAP's sitting around up at Ade the coupe breaker last week
Sure you could contact him and get him to send you one
I'm in Italy! Shipping for a big fat 6+kg piece of metal and graphite will kill me.
2001 2.2HDi saloon Executive (not the English exec, worse!) in Obsidian Black. Semi-Mux D9, build code 8761
Want a remap? Contact us, learn to do it yourself on ecuedit.com or let the professionals of editecu.com do it for you!
£90 + shipping for a used one from a reputable guy like Ade definitely seems like a viable alternative to me.
2002 (D9) Peugeot 406 Coupe SE, 2.2 litre Petrol. Scarlet Red/Rouge Ecarlate/Rosso Scarlatto. Black Leather interior. SOLD
2008 (E60 LCI) BMW 525i M-Sport, 3.0 litre Petrol. Carbonschwarz Metallic. Black Dakota Leather and Myrtlewood interior.
highlander wrote:Aren't they more than £600 new from the dealers?
£90 + shipping for a used one from a reputable guy like Ade definitely seems like a viable alternative to me.
What you say is fairly reasonable, and I'll probably do what you suggest (in the summer when I have some spare time - being a student and a father and a worker takes away all my time).
I've always wanted to tinker with cars, but never got around it since I do not have a proper garage (I have a big garden tho) and absolutely no tools: when I had to remove the MFD i had to find out the right flat screwdriver cause I don't have any torx screwdriver (and it was Sunday)!
How can I remove the fap if I have no way to lift the car? Speaking from a completely noobish point of view now!
2001 2.2HDi saloon Executive (not the English exec, worse!) in Obsidian Black. Semi-Mux D9, build code 8761
Want a remap? Contact us, learn to do it yourself on ecuedit.com or let the professionals of editecu.com do it for you!
Many people have asked a tyre and exhaust centre to remove the FAP, either to remove the element, or to allow the owner to do so, before re-fitting. Typical prices in England are about £ 20 - £30 for this activity.
2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
dogslife wrote:Many people have asked a tyre and exhaust centre to remove the FAP, either to remove the element, or to allow the owner to do so, before re-fitting. Typical prices in England are about £ 20 - £30 for this activity.
It's fairly illegal here, so not many mechanics will do that... but I'll look around.
2001 2.2HDi saloon Executive (not the English exec, worse!) in Obsidian Black. Semi-Mux D9, build code 8761
Want a remap? Contact us, learn to do it yourself on ecuedit.com or let the professionals of editecu.com do it for you!
Static map swapping is simple enough, with a pre-selection switch on the high address line. Dynamic swapping is not that difficult. The good old ZX Spectrum had a shaddow rom system that allowed the main rom to be paged out after using a RST 8 call. The technique is simple enough in that the change is synchronised with the memory read. Roms are easy because you do not need to consider writing to the chip. Flash roms are only written when reprogamming, so it would be possible to have a lock switch that enables the programming mode and inhibits the swapping. For reads even if there was a bit flip during the read cycle, the latched address will not change and consistent data will be presented. If there is a single byte corruption in a map as a result of the switch this is unlikley to matter.
Remember - it only takes a few inches of water to drown a 406 don't make the same mistake I made! The V6 Exec is no more.
I haven't read the datasheet but typically switching the high address line at any time won't be an issue, since the address to be read/written is latched before the operation, so flipping the switch during a R/W operation isn't a problem.
The vehicle never writes to the EEPROM anyway.
Intuitively I think this is entirely viable and actually a very clever idea
Edit: from the 29F800 datasheet (the ST flavour, for reference):
The Address Inputs are latched by the Command Interface on the falling edge of Chip Enable or Write Enable, whichever occurs last.
The Program command can be used to program a value to one address in the memory array at a time. The command requires four Bus Write operations, the final write operation latches the address and data in the internal state machine and starts the Program/Erase Controller.
2002 V6 SE Coupé (210bhp) - (Aegean Blue)
2002 D9 2.2 HDi Exec Estate - Samarkand Blue PM me for PP2000 diagnostics around Surrey
2001 2.2HDi saloon Executive (not the English exec, worse!) in Obsidian Black. Semi-Mux D9, build code 8761
Want a remap? Contact us, learn to do it yourself on ecuedit.com or let the professionals of editecu.com do it for you!
