programming car chips

do chips have to be removed to be reprogrammed in general?
do any cars allow for in-vehicle reprogramming?

do they use eeprom for 2004 cars?

just trying to get an idea if this is a DIY thing or is a logic
analyzer needed to figure things out

yes I can search but i figure there should be some car hackers here
that have done some of this
how cheaply can it be done?

I'd like to get at the drive-cycle code and all that kind of data

Electric Comet > wrote in news:mc7kec$jik$3
@dont-email.me:

> do chips have to be removed to be reprogrammed in general?
> do any cars allow for in-vehicle reprogramming?
>
> do they use eeprom for 2004 cars?
>
> just trying to get an idea if this is a DIY thing or is a logic
> analyzer needed to figure things out
>
> yes I can search but i figure there should be some car hackers here
> that have done some of this
> how cheaply can it be done?
>
> I'd like to get at the drive-cycle code and all that kind of data
>
>
>
>
>
>
>
>
>
>
>
>

depends on brand and car. need more info KB

On Fri, 20 Feb 2015 20:24:42 +0000 (UTC)
Kevin Bottorff > wrote:

> depends on brand and car. need more info KB

4-door mazda six 2004

I did find a guy that sniff'd the signals on his rx8 and designed
a unit to display data from a turbo onto the stock lcd but
this is different than what I am interested in doing

would like to get at the internals