Hmm well been doing some research into doing some chip tuning at home.. This is what I've found..<p>1) Dump the ROM<br>2) Identify what type of CPU that you are dealing<br> with. <br>3) Find a dissasembler for the CPU<br>4) You can't just find the tables and tweek them<br> to do it right you must understand the code.<br> (reverse engineer the ECU logic) I am not sure<br> of what the side effects are of just tweeking<br> the tables.. <p>5) Monotronic has more than one checksum inside to<br> find out if you are tweeking with it.<p>6) From the source I found alot of chip tuners <br> don't do it right.. (THIS IS REPEAT OF WHAT <br> I READ I DON'T KNOW IF A4 CHIP PEOPLE KNOW <br> OR NOT!!)<p>The GM ECU's have tons of support.. alot of people tweaking their Z28's / Grand Nationals / etc etc.. <p>ahh well anyone else try to do this..

link -><ul><li><a href="http://www.dvol.com/~users/gal/giac.htm">http://www.dvol.com/~users/gal/giac.htm</a></li></ul>