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So, Tonight I graphed the maf input into the ecm which was perfect, graphed the cam position sensor inputs (1 degree and 180 degree signals) into the ecm which also look perfect, as well i checked the knock sensor voltages.
The only one that seemed a little odd to me was the knock sensor was reading about 4.8v which seems really high as the specs at idle are supposed to be around 2.5 volts. I cut the wire near the ecm and checked voltage on both sides of the break. The output voltage from the knock sensor was right around 2.5v when i cut the wire. I checked the wire from the ecm and it showed the 4.8v even if only the ignition was on and not running. As the knock sensor is a 1 wire sensor I'm under the assumption that the piezoelectric element was all that created a voltage in the system and the ecm wasn't supposed to put out any voltage itself. or is the ecm supposed to put out a reference voltage for it somehow. Please give me some advise on this as i'm not 100% sure how it's supposed to work.
I'm also a little disappointed as my buddy posted the same problem on his rx8 forum and they've given a lot more advise about it then zilvia which is pretty much a nissan/240sx specific forum.
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