It's been talked about in the $EE code for a long time, but something was in the way-I am not sure what it was. I know the RPM limit is hardcoded and would require a major code redesign if you wanted to go higher than the factory PCM's max RPM (not the stock engine redline, but the "PCM" redline...) and I think the 2-bar MAP swap was something similar. Hopefully this thread will result in a proper 2-bar support for the LT1 PCM...there are a few old Nissan V8's that could REALLY benefit from this (they used a distributor with a timing output identical to the optispark!)