Ok, so the bias is what had me confused when I look at other calibrations that use a different mask. I only see knock counts after the startup test (sometimes not) and in the higher RPM range say around 4000 and above. I know that the knock system operated well before the swap, but I don't trust it now. I would say the new sensor is probably just fine, but since they are for a 305 and not a 350 they just aren't accurate. I believe that the bias is only added in TP when the .xdf is set up that way. The .xdf I use is supposed to have the bias already added into the spark table. And thanks for clearing up the difference in in where the code is stored in c3 ecm's vs. p4 ecm's. If I don't figure out a multi port intake solution soon I am just gonna go ahead and upgrade to a 7427 pcm. I have been holding off because I really want to run a pcm capable of properly running multi port and controlling an electronic trans such as a 4l60e. Well, I need to head to bed, but thanks again for the help. I still have a few questions regarding some of the tables in the calibration and how to modify them properly to make the ecm do what I want.
Phil
Bookmarks