Fulvia-hf
I have almost finished my 1989 851 strada but the fuelpump does not run with the re-flashed Eprom. Second Eprom (same programmer) with this problem. Original Eprom; bike runs but probably lean.
I was told I needed a new Eprom as I fitted reverse cone Contis and an open airbox lid with high-flow foam UNI filter. I have the original P7 computer. What could have gone wrong?
I have spotted this supplier on Ebay: dr Corse from germany. Does anyone has experience with this supplier or can help me to get the best Eprom for my bike?
https://www.ebay.nl/usr/dr.corse?_trksid=p2047675.l2559
patrick
Hello
Sorry just read your post, Covid helps to get time for forums!
No experience with this Ebay guy.
If the fuel pump don't run after a eprom change , the eprom is wrong for sure.
Did you solve the problem finally?
Pat
patrick
When I say wrong i mean:
incomplete programme
Or programme corrupted
Or bad eprom ref ( for a 89, shd be a 64 bit or 128 bit max )
Patrick
brad black
did you put the eprom in the wrong way around?
generally people run the 008B eprom in an 89 with mufflers and open lid. it's the same as the 009B, but with 6% added to the air temp trim so it's 6% richer.
Fulvia-hf
Eprom is correctly installed. OEM Eprom put back in and pump runs immediately.
Is the Eprom in de P7 ECU custom programmable on the Dyno?
Cheers,
william
Fulvia-hf
I stumbled upon an article of Ducati-upnorth :
http://www.ducati-upnorth.com/tech/ecu.php
I have found this trimmer in my ECU see pictures. However the opening to adjust it in the case is locked. Anyone has experience fidling with this trimmer?
jakepeewee
William,
That will probably be the CO trimmer.
Where in the Netherlands are you located?
I can probably make you a new eprom for the 851
Jacco
Fulvia-hf
I just ordered an Eprom form Haga40. The 002. Suitable for the 1988 strada with open airfilter and race exhausts. Must work also for my 1989 with the same config.
Unfortunately Easter will slow the delivery. Ah well...
Cheers,
William
PS gives me a bit more time to work on my Side stand protection circuitry.
brad black
tricolore is dual injector, 89 single. it won't work.
i would have thought the 038 eprom was for a p8 ecu, not a p7. what do the stickers on your ecu say?
Fulvia-hf
Would be a bummer if the 002 Eprom doesn't work. I also get a 013 send. Will this get me anywere?
In the attachment my ECU.
Cheers,
William
brad black
it's a p7.
013 is an sp eprom, so it should be single injector per cylinder, but for a cams. not appropriate also.
BARONROJO
Fulvia-hf wroteIs the Eprom in de P7 ECU custom programmable on the Dyno?
It is. I've done some for 16 ECU which work with an EPROM too. Then main issue, though is have the knowledge to locate the fuel map table and TPS and RPM breakpoints. With that and a simple datalogger software with AFR reading it can be very finely tuned without much problem and hassle.
jakepeewee
William,
How are things working out?
You have a P7 WM ECU, so you need an eprom to suit that ECU. You can check size of the bin file, should be 16kB. And then there are two distinctly different versions: for a single injector per cilinder EFI system and for a double injector system (SP2/3/4 and as I understand the Tricolore))
You could use the 035.bin as basis. That eprom is for the 851 from 1992, is for as P7 and I think for a single injector setup. I guess you are not able to read/write eproms?
Fulvia-hf
See attached the list I received from Haga40. Very helpful.
I will wait for the 002 and 013 to arrive and will test them as I have them.
I assume by reading the list that the 008 is best suited for my 851. This 54610081A is no longer available. it seems to be superseded by the 54610081B.
Cheers,
william
PS I can just change an Eprom. Not program it.
brad black
the b on the end is the change they made to the software to reduce starter clutch issues i was told. otherwise, the mapping is the same.
patrick
hi
As Brad said, your unit is a P7 and this eprom you described as the OEM (038) is not; it is the 888 OEM (engine CC, valves and fuel ramp are different)
I am not surprised the engine don't like it, especially at low revs and in a P7 unit.
If your bike (engine) is a 851 89 stock
you shoud use a 009 (as the label written on your P7 unit cover)
In case of open airbox and muffler you can try the 008 yes (6% richer) but it makes the bike even more strumbling between 2000 and 5000 rvs (like too much richer, not sweet) overall if your engine is stock (valves, valves springs, fuel ramp)
If you use the 008 You can try to screw clockwise your trimmer screw, to lean a litte bit at low and mid revs.
In fact, it depends of your driving style; if you cruise, I wd stay with the 009, if you drive always hard, I d use the 008 richer and play with the trimmer screw, better using a CO meter (or a good ear)
A member proposed you to send a 851 eprom, I would get this opportunity if you have time to play and set.
I can't do at this moment, my programming unit and soft worked under XP and my computer is Windows 7 and the Gateway I used, don't work anymore for the moment.
cheers
patrick
patrick
hi
As Brad said, your unit is a P7 and this eprom you described as the OEM (038) is not; it is the 888 OEM (engine CC, valves and fuel ramp are different)
I am not surprised the engine don't like it, especially at low revs and in a P7 unit.
If your bike (engine) is a 851 89 stock
you shoud use a 009 (as the label written on your P7 unit cover)
In case of open airbox and muffler you can try the 008 yes (6% richer) but it makes the bike even more strumbling between 2000 and 5000 rvs (like too much richer, not sweet) overall if your engine is stock (valves, valves springs, fuel ramp)
If you use the 008 You can try to screw clockwise your trimmer screw, to lean a litte bit at low and mid revs.
In fact, it depends of your driving style; if you cruise, I wd stay with the 009, if you drive always hard, I d use the 008 richer and play with the trimmer screw, better using a CO meter (or a good ear)
A member proposed you to send a 851 eprom, I would get this opportunity if you have time to play and set.
I can't do at this moment, my programming unit and soft worked under XP and my computer is Windows 7 and the Gateway I used, don't work anymore for the moment.
cheers
patrick
Fulvia-hf
Hi Patrick,
You, and the rest of the participants in this thread are very helpful. Thanks!
The OEM eprom in my ECU is indeed a 009. I was told this chip would give too lean a mixture for the reverse open contis and the matching open airbox. The 038 you see in the picture is probably no longer a 038 but was programmed to work with a P7 and give the mixture my bike would need. Unfortunately the workshop performing this reflash has no P7 unit to fit it to for testing and subsequently left the testing to me and it failed by not allowing the fuel pump to run. two times. Or is an OEM Eprom not reprogrammable? in that case I'm probably fooled.
In the list with options I miss the one using the trim screw with the OEM 009 to make it a bit richer next to use the 008 and the trim screw to lean it out.
is this a possibility?
If this not helps it will at least give me a bike to ride on while I search for a custom made one. (from a member) or buy a bespoke one. After 4 months of fiddling I really want to put my helmet on.
Cheers,
william
Mr.R
Hi William,
Lots of good helpful advice given here by members more knowledgeable than me but...
Here's my tuppence worth of advice.
The easiest way to get your bike on the road in a fairly good rideable condition, would be to contact John Hackett at JHP/Ducati Coventry, tell him your bikes spec' and ask him very nicely to burn you a base line chip.
Now Mr Hackett is a real 851/888 enthusiast, so when (if) you contact his shop ask to speak to him personally about a 851/888 problem.
Steve R
freqrider
O38 is an 888, p8 chip. Not surprised your fuel pump won't work as they are completely different programs in the chips.
