Re: [Amc-list] OBD II Scan tools

[Tom Jennings <tomj@xxxxxxx>]

METOO!

I've got the Howell kit which uses the 87 - 91 GM computer, need to 
re-map the thing for my engine (a 232, not 258). I need to gather the 
data, then either send data+cash to someone to burn me PROMs, or get the 
gear to do that myself.

I used to burn EPROMs in the old CP/M days, hell I did it daily at 
times, but I'm not firing up a machine from the 1970's to do it! (Memory 
chips pop every time I power it on...) So I need to buy a USB EPROM (and 
EPROM-pinout flash chip) programmer.

I want to eventually do the little Rambler, and the Hornet, with GM TBI 
since it's junkyardable -- if I can make my own PROMs.

(Megasquirt is better, but $400 per computer, plus accessories, is too 
much; the GM part is like $60 new never mind junkyard computers, 
harness, connectors, etc)

So there's three parts:

1. Gather data --  there's some Innotronics kit comes with a wide-band 
O2 sensor and 5 inputs (rpm, throttle, MAPO, throttle, etc), with USB to 
dump the collected data to a computer. There's also ways to do this 
directly into the laptop, but still need that O2 sensor. Haven't decided 
which is better here.

2. Software to munge the gathered data into the tables for the GM 
computer PROM.

3. With modified GM computer program and tables, burn a PROM and stuff 
it into the GM computer.



> I'm leaning towards the lap top type solution, because (at least in  
> theory) it would be easier to update to new model cars are required....

I guess it depends on what you want to do. Me, only TBI, maybe later, 
port injection, conversions for old cars. Personally I have zero 
interest in late-model cars. And if I get 5 years out of a thing, that's 
probably pretty good (eg. Innotronics).

I'm tryin to get started on it this month.

What have you found so far? WHat's your specific interest?
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