MBE AJP V8 ECU EPROM dump

MBE AJP V8 ECU EPROM dump

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Juddder

Original Poster:

835 posts

183 months

Thursday 13th August 2015
quotequote all
I'm planning on lending Boatbuoy my spare MBE Systems ECU to see if he can get his car running with a different ECU

However the spare ECU I have is EPROMed for Speed 6 engines, not AJP V8s like he and I both have

Has anyone got a dump of the EPROM from an AJP configured ECU they can share so that I can burn it to an EPROM for him to test?

The EPROM is a 27256 and mine was labelled as S6 - 2F2 B8E as in the photos below

I've also included a link to 32K dump from the original EPROM so that anyone who has one can compare it (*or just use in testing in the future!)

Thanks





EPROM Dump

[edit] Interestingly the letters written on the EPROM are the checksum of the data as you can see from the EPROM software output below.

Guess this was how TVR / MBE Systems identified which release of the software they were putting into an ECU!



Edited by Juddder on Thursday 13th August 15:03

Tanguero

4,535 posts

200 months

Thursday 13th August 2015
quotequote all
I have a spare 4.2 EEPROM from before my 4.7 rebuild that you/he are welcome to borrow. It had been remapped by Joolz nad has his cooling mod too. PM me an address if that's any help to you.

Juddder

Original Poster:

835 posts

183 months

Thursday 13th August 2015
quotequote all
Tanguero said:
I have a spare 4.2 EEPROM from before my 4.7 rebuild that you/he are welcome to borrow. It had been remapped by Joolz nad has his cooling mod too. PM me an address if that's any help to you.
Very kind - that might work nicely

I've just updated Olly (BoatBuoy) on this as an option, so it might be that the spare ECU heads up north with him from me and EPROM needed finds it's way there via POST from you smile

BTW I have EPROM burners here and spare 27256 EPROMs, so can burn one for him if anyone has a dump of the image on their hard disk etc. - just in case that is easier!

Byker28i

58,864 posts

216 months

Thursday 13th August 2015
quotequote all
is it easy to dump a copy from a car?

Juddder

Original Poster:

835 posts

183 months

Thursday 13th August 2015
quotequote all
Byker28i said:
is it easy to dump a copy from a car?
Easy - here's a picture of my desk currently in the office smile

- TL866 Universal Programmer (cheap off of eBay)
- MBE ECU with top unbolted
- 27256 EPROM chip removed (*carefully using flat screwdriver)

Read it into your PC using the software as a ST A27256 EPROM (see screen shot above)


Boatbuoy

1,941 posts

161 months

Thursday 13th August 2015
quotequote all
Guys,

Thank you all so much. PH really is a wonderful place and I really appreciate your efforts. I was seriously close to walking away from the whole car earlier today.

I've managed to get the loan of another ECU from someone local to the car, so please don't worry too much if you can't get hold of the relevant EPROM.

I'm assuming (in my naivety towards all things ECU) that if I plug in another ECU and the car runs I'll then know that mine is FUBAR'd? In which case the fun begins with trying to track down a replacement. Jerry at MBE seems convinced that he won't be able to fix it, and Dom at Powers Performance quoted me the replacement system this afternoon, I've only just finished picking myself up off of the floor!

Best Regards,
Olly

ukkid35

6,138 posts

172 months

Thursday 13th August 2015
quotequote all
Just in case you missed it, the MBE that I mentioned in my PM works perfectly in my AJP8.

Juddder

Original Poster:

835 posts

183 months

Thursday 13th August 2015
quotequote all
No problems Olly - glad to have been available to help if needed - I even dug out an old Dell laptop with XP on it today if you still need one of those to run diagnostics with smile

BTW, I don't have one, but a number of the guys have replaced the MBE ECU with an Emerald one which has had some very good reviews on these forums as far as I remember reading

They do a compatible harness and a replacement ECU , so just in case you _do_ need one (*hopefully not!)

Tanguero - I'll PM you separately because if I can borrow your 4.2 EPROM for a day or so, I can dump it with the EPROM reader, upload it my site, and then everyone has a reference copy to burn an image from should they ever need it biggrin

LincsCerb

128 posts

119 months

Thursday 13th August 2015
quotequote all
Boatbuoy said:
Guys,

Thank you all so much. PH really is a wonderful place and I really appreciate your efforts. I was seriously close to walking away from the whole car earlier today.

I've managed to get the loan of another ECU from someone local to the car, so please don't worry too much if you can't get hold of the relevant EPROM.

I'm assuming (in my naivety towards all things ECU) that if I plug in another ECU and the car runs I'll then know that mine is FUBAR'd? In which case the fun begins with trying to track down a replacement. Jerry at MBE seems convinced that he won't be able to fix it, and Dom at Powers Performance quoted me the replacement system this afternoon, I've only just finished picking myself up off of the floor!

Best Regards,
Olly
If you do need to get your ecu repaired try www.oddified.com I know he still has some spares for older MBE ECUs. Worth a try if your stuck.

Tanguero

4,535 posts

200 months

Friday 14th August 2015
quotequote all
Juddder said:
Tanguero - I'll PM you separately because if I can borrow your 4.2 EPROM for a day or so, I can dump it with the EPROM reader, upload it my site, and then everyone has a reference copy to burn an image from should they ever need it biggrin
I'll stick it in the post tomorrow.

Boatbuoy

1,941 posts

161 months

Friday 14th August 2015
quotequote all
Thanks LincsCerb, if I'm able to prove that it is my ECU that's duff I'll give oddified.com a call and see what they say.

I've been offered a replacement ECU for sale, but it's currently got a 4.5 EPROM on it. So Judder, I may still call on yours and Tangero's combined services if I may to get a 4.2 EPROM on there?

Thanks all once again.
Olly

Juddder

Original Poster:

835 posts

183 months

Friday 14th August 2015
quotequote all
Boatbuoy said:
I've been offered a replacement ECU for sale, but it's currently got a 4.5 EPROM on it. So Judder, I may still call on yours and Tangero's combined services if I may to get a 4.2 EPROM on there?
Great stuff.

Tangero is going to post his modified 4.2 EPROM to me for reading, and then we will have that image available so we can burn extra 4.2 EPROMs as needed.

I dug out 3 blank 27256 EPROMs, so have those to start with, so if you do get the 4.5 ECU I can just send up a 4.2 EPROM for you to replace with (*and you can send me the 4.5 EPROM for reading smile )

Alex

gruffalo

7,509 posts

225 months

Friday 14th August 2015
quotequote all
Would it be worth setting up a library of different maps, if we send them to you listing the details around the engine like compression, injector type, capacity and exhaust type then it could be quite useful for people doing engine mods.

I can supply a 4.7 short induction, ACT balanced header, Bosch green top injector with red rose compression map if needed. It would make a useful running in map if not used as the final thing.

Gazzab

21,061 posts

281 months

Friday 14th August 2015
quotequote all
Shouldnt we support the professionals who have invested so much in MBE maps rather than take their work and redistribute it?

Juddder

Original Poster:

835 posts

183 months

Friday 14th August 2015
quotequote all
I'm happy to host a library of images - I do the same with the 'Alternative Parts List' so it's no hassle to do so.

I would think hosting the standard MBE factory provided images (4.2, 4.5, 4.5RR, S6) won't put anyone's nose out of joint, especially seeing as I doubt MBE support the unit anymore, judging from Ollie's discussions with them

3rd party maps are welcome too - I would imagine they would only be a reference for most people as trying to put one set of maps on a differently rigged-up car without a rolling road etc. etc. is probably going to not work very well

gruffalo

7,509 posts

225 months

Friday 14th August 2015
quotequote all
Gazzab said:
Shouldnt we support the professionals who have invested so much in MBE maps rather than take their work and redistribute it?
Yes but if you want a generic map for running in or that will do until you get a car mapped to your exact build then why not provide that capability?

I would not advocate using an approx map long term but while you save up for a session on the rollers also I would also not advocate putting a freshly rebuilt engine on the rollers being run hard for 8 hours. Something safe for the first couple of thou miles is what I am suggesting.

Juddder

Original Poster:

835 posts

183 months

Friday 14th August 2015
quotequote all
Just having a bit more of a read around on ECU versions and according to mikesr the 4.2 ECU EPROM is version #94110035

The Speed 6 version I dumped yesterday seems to have it's version number at 0x200 and it's version #94130101 - I'll update the image above to that version number so that we can use a consistent naming convention for the images as they come in

From studying the ECU software the available versions that it supports are:
  • #9280240
  • #9280270
  • #9410034
  • #9410035
  • #9410090
  • #9410100
  • #9410101
You can also read all the locations of the RAM where the different outputs of the car sensors are stored, for example from the 9410100.ECF file

[RealTimeStart]
#Title,legend,units,max,min,command,SamplingInterval
Speed ,Speed ,rpm , 64000, 0,C37C, 10000
Baro ,Baro ,mBar, 1063, 0,0050
Lambda1,Lambda1,V , 2.50, 0,0049
Lambda2,Lambda2,V , 2.50, 0,004A
Battery ,Battery ,V , 20.00, 0,00A7
Inj 123,Inj 123,mS ,131.072, 0,C37E, 10
Inj 456,Inj 456,mS ,131.072, 0,C376, 10
...


gruffalo - I'll PM you separately to see if we can arrange a way to borrow yours and have a read of that too



Edited by Juddder on Friday 14th August 18:07

gruffalo

7,509 posts

225 months

Friday 14th August 2015
quotequote all
Do you work in London? If so I can just bring you the ECU and meet up one lunch time?

Juddder

Original Poster:

835 posts

183 months

Friday 14th August 2015
quotequote all
gruffalo said:
Do you work in London? If so I can just bring you the ECU and meet up one lunch time?
Sounds good smile

Our office is in W2 and that sounds like a great plan if works with you

gruffalo

7,509 posts

225 months

Friday 14th August 2015
quotequote all
Juddder said:
gruffalo said:
Do you work in London? If so I can just bring you the ECU and meet up one lunch time?
Sounds good smile

Our office is in W2 and that sounds like a great plan if works with you
I am based in Bishopsgate, I will PM you next week when I get home and arrange something.