EPROM Chip

[pavs]

I bought an EPROM chip from a Q4 on e-bay the seller assures me its from a Q4 with all the normal increases in power etc but when I fitted it the engine won't fire

I've replaced the original chip and all is ok any ideas?

[AlfaJack]

Got a link to the chip? At a guess, its just not mapped properly

[pavs]

http://cgi.ebay.co.uk/ws/eBayISAPI.d...9618&rd=1&rd=1

[pavs]

http://cgi.ebay.co.uk/ws/eBayISAPI.d...9618&rd=1&rd=1

the seller said it came straight out of a '95 Q4 which he sold last month

[AlfaJack]

Just guessing (again) - How much does the engines ecu chip have to do with Alfa's code system, I am thinking along the lines that the '95 car might have the Code imobaliser - but if this is the case I wonder if it would crank at all

[wrinx]

Agree with Jack, yours is an older series and won't be compatible with the 95 car. Don't suppose you could get the ECU serial number to check?

wrinx

[Steve Webb]

From being around when the old Evocars were working on my chip the one thing I will say is that Q4 chips are a black artform. I seem to remember that the 92/93 cars have a different chip from the 94 cars which in turn have a completely different chip from the 95 cars.
My chip ended up being based on Q4 executables (more break points) with tweaked 'grale data.
I may have a spare chip somewhere if you'd like to try it Pavs

Steve

[pavs]

Thanks steve that would be great

will send a PM with my post address

[Steve Webb]

Hi Pavs,

got your address, I'll go and dig the Eprom out and stick it in the post for you. I'll let you know when its on its way.

[arjunior45]

'92 Q4s {with intercooler's water injection} had the eprom coded "101.03".
'94 Q4s {late '93 up to late '95 - without intercooler's water injection} had the eprom coded "101.04".
And '96 Q4s, the "wide body", {late '95 up to April '96 - end of production} had the eprom coded "101.05 IMMO".
I believe you could switch the first two eproms {101.03 and 101.04} but you can not use the "101.05 IMMO" chip-eprom in the '92 or '94 Q4s e viceversa.

It is not that difficult to convert any type-code eprom to another {a 101.04 to 101.05IMMO for example a viceversa} if you know which area to replace.
Only the Evocars chips were completely different from the OEM {original} chips as they were based on Integrale's Evo2 chip and they are more difficult {at least for me} to convert them into a "101.05 IMMO" like chip-eprom

Cheers

Nick

[AlfaJack]

Great info Nick, cheers!

[Steve Webb]

Not forgotten you Pavs, still looking for the Chip. Doesn't help that I've moved house since the last time I saw it, but I think I know where it is.

[pavs]

Cheers steve

[Steve Webb]

Still looking Pavs, but the good news is I've found a chip. The bad news is I don't know whether its the old standard one or the Evocars one.
Anyone got a pic of a standard chip so I can check?

[Brul(tm)]

Anyone got a pic of a standard chip so I can check?

Yes! Will make a picture tomorrow.

Greetings,
Marc

[pavs]

Any joy steve?

[arjunior45]

Any joy steve?

pavs,
you have an e-mail.

Nick

[Steve Webb]

Any joy steve?

Sorry Pavs, looks like the chip got lost when I moved. Bit pissed off at that to tell the truth.

Steve

[pavs]

Steve no worries Nick has sorted me out