2006 Silverado 2500 6.0
112/118 112LSA TSP Cam .550 Springs
Only additional mod is a muffler delete.
Almost complete top end rebuild, minus rocker arms and injectors.
I tuned the MAF and VE tables yesterday and everything is within +/- 1% on MAF and +/-3% on VE. High RPMs are showing lean but I think that's from not being able to keep the RPMs and MAF freq high enough for good data. Wideband is reading rich at around 11.3-13 at WOT while log tables are showing lean in this area. I'm very confused and unsure what is good data or what is actually lean/rich.
The next issue is now with everything enabled, (cot, dfco, VE, MAF, etc.), I am still showing LTFTs around 10 in some areas and I've tried to adjust tables to account for that but it isn't changing much.
Finally, I seem to be getting kr at different areas but it isn't consistent. I was getting 4-8* of retard last night at 120map through 28-3600 rpm. I pulled that much timing out and it seemed to not retard in those areas anymore but I did not get to pull much log data from a 20 minute drive to work and I won't be able to log anymore until Wednesday when I leave work. I'm running 91 pump and have been getting gas from multiple stations on an empty tank to eliminate the potential of bad fuel.
Also showing random misfires across most injectors at random points. New coils, plugs with less than 200 miles on them
Tl;Dr: MAF and VE tables are tuned, WOT shows lean in these tables while WB shows rich. LTFTs are high even when tables are showing rich to lean within 1-3%. Finally, getting KR at seemingly random points. Not always WOT and not always partial. I'm stuck. Could the knock sensors be detecting the loud exhaust? Everything is tight and gaskets are new.
Also, should I desensitize the knock sensors slightly if this isn't some actual issue?
Yes some areas are reading lean in the 3k-4k range and that's just tip out. I was attempting to tune WOT at the time and under normal circumstances they are also within 1% +/-
Also yes, have not began fine tuning the idle yet so it is a little lean in some areas but not by much.