Does anyone know the reference address for the 968 maps. I've decided to try and understand the mapping better and have pulled the map off the EPROM. I've worked out a few tables but not got the complete set yet. In particular im struggling with the 2d maps.

 

Come on boys, I thought you lot would be in for a bit of ECU hacking.

 

No idea but that sounds like a fun project!

 

I don't know any of the addresses. However, lets keep this going and hopefully we can learn something.

If you email me I'll send you the .bin file of a custom 968 chip. I run it in my car and the I can say that the engine seems to have more mid-range torque and certainly has the higher rev limiter. The chip is claimed to have re-mapped fuel correction and timing advance maps, higher rev limiter and altered variocam points.

There is some information if you google search FR Wilks. He posted information on 944/944S2.

I've used a .bin comparison tool to understand the differences between the stock chip and my custom chip. There is not a ton of difference - still trying to figure it out.

Here is what is different (hex addresses): 0515-052B, 8D86-8D96, 8DAA-8DBA, 8DCF-8DDE, 8DF2-8F2A.

How about posting what you've discovered so far?

hightecheuro@gmail.com

 

I'm running an EPROM emulator and as soon as I have a decent confidence level of where things are I'm planning to tweak things on the fly and monitor with my data-logger and wide-band O2 sensor.