[Diy_efi] ecu program modification

[Steve Ravet]

Hi Tom, in general specific questions get more response than broad ones,
but here's some info for you.  OBD2 brought more powerful ECMs in
general, to deal with misfire detection and other requirements.  The
increased speed and memory enabled more sophisticated fueling and spark
algorithms.  But OBD2 PCMS are still evolutionary.  The equipment you
need will depend on the vintage that you're working with.  OBD2
reflashing algorithms are proprietary, so you can either reverse
engineer them, or socket the flash and reprogram the old fashioned way.
You'll want a device programmer that can handle flash and EPROM, and if
your PCM is EPROM based then you'll also need a UV eraser.

Any of your Audi EFI related questions would be appropriate for this
list.

--steve

> -----Original Message-----
> From: diy_efi-bounces at diy-efi.org=20
> [mailto:diy_efi-bounces at diy-efi.org] On Behalf Of -
> Sent: Monday, December 20, 2004 6:57 PM
> To: diy_efi at diy-efi.org
> Subject: [Diy_efi] ecu program modification
>=20
> Hi,
>=20
> I'm into starting learning about ecu programs and their=20
> modifications (so-called chiptuning, haha :) I don't know if=20
> this is a good place for asking about it, so I'm asking if it=20
> is :) so far I've seen this list is mostly into hardware things.
> I'm into Audis (also saw another guy who was interested in=20
> it) only (bosch systems, currently only MPI) I don't want=20
> info on what maps are or how to find them, I have some=20
> experience in it... but will need info on equipment (what to=20
> use), never messed with eproms/eeproms, and don't know much=20
> about OBD programming the forums I've found so far either do=20
> not cover knowledge or ppl are not willing to share so this=20
> is why I'm asking if this is the right place? :)
>=20
> tom
>=20
>=20
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>=20
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