Diagnostic software for 90
If you are LUCKY, VERY LUCKY you may encounter someone that 'knew' a guy one time that did this.
Here's how I do it om my '91.
1) I use DataMaster for scanning on my '91 which runs the identical system as your '90.
2) I use TunerCat for modifying the EPROM data base on what the scanned data indicates should be changed.
3) Then I use an EPROM burner to read/write the new data to the PROM.
It's a little confusing at first because it's difficult to understand which product does 'what'.
But it simply breaks down into the first three sentences above.
There's no 'all in one' product that does everything.....
When you understand the three concepts:
1) Scanning for data (UNI File)
2) Reading data FROM the PROM (BIN' File)
3) Writing data TO the PROM (BIN File)
You're well on your way to EPROM programming.
After that you'll spend a lot of time learning to intepret the ascnned data you collect and how it relates to the tables in the PROM.
PROM data is arranged in 'tables' just like any other database system.
Take a trip over to the DIY EPROM programming section of this forum for more info.
Good luck and have FUN..........................
Last edited by VetNutJim; Feb 25, 2007 at 11:44 AM.
to scan and log, then engage the services of someone like
Alvin at PCMforless?
This approach puts him on the road to self-sufficiency, if that
is his destination, while reducing his initial learning curve, outlay
and the risks of self-inflicted tuning errors.
.

I have a 91 and got the moates cables and the rt-tuner software . I just wanted to read / record info and didn't want to venture into doing the tuning my self . It took awhile to get it going and Craig from moates actually talked with me on the phone @ great lengths to get it up ( I highly recommend Craig @ Moates Great customer service
Good luck and I'll be interested in hearing how U made out
, PatsFan
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