I am new to PCM tuning and hoping to learn from those more experienced. I almost pulled the trigger on purchasing HPTuners, but I ended doing some more research which ultimately landed me at the wealth of information I found here. After some reading here, I ordered an AVT box so I could use DHP Powrtuner and Tinytuner.
Long story short, I need to end up with a 1997 L67 PCM.
My research shows that all 3800 cars for 1997 used one PCM, whether L36 or L67. Parts catalogs that offer refurbished PCM's will sell you the same part number for any car that year, and tell you that further programming is required. This leads me to believe that all these PCM's are electrically identical inside, with only the software being the difference. Is this correct?
Could I buy a 1997 L36 PCM (since they very plentiful and so easy to find) and then write a 1997 L67 bin file to it with the DHP software, and then end up with a 1997 L67 PCM?
Am I right in thinking that the .bin file is ALL of the software and tuning constants that the PCM uses?
