Knock retard maxing out 8 and no fluctuating

[OutstandingSilverado]

So I can't seem to find the Rhyme or Reason why it's doing this but my knock retard goes from zero up to 8 degrees really fast and stays at 8 degrees and then drops back down to zero usually when I'm on my way to WTO
Any thoughts or ideas?
Thanks IMG_20170716_183526.jpgIMG_20170716_183333.jpg

[5FDP]

What's the setup?

Have the tune and logs you can post?

[OutstandingSilverado]

KR plateauing.hpl KR pleateauing editor.hpt

here you go

99 nbs Chevy Silverado 2wd extended cab standard bed
K&N cold air intake
04 LS1
243 heads
Comp cam 54-459-11( @.050 231 in 239 ex w/ 113 lsa)
Brian Tolley racing hardened pushrods
Elgin LS7 lifters
Melling high pressure oil pump
LS2 timing chain
Comp cam 1:72 ratio ultra gold rocker arms
LS2 accel super coils
E3 diamond fire spark plugs
MSD super conductor wires
Zex 75-175 hp nitrous wet shot
DW 50# fuel injectors
Walbro 255 lph fuel pump @58 psi
Innovate mtx-l plus afr wideband 02
Long tube headers
Egr and evap delete
Rear 02 delete
Full dual exhaust w/ super 44's
4L60e w/ 2600 stall

[OutstandingSilverado]

Hope that was right,

This is my first thread and posting on a forum.

[blyne3]

are the knock sensors torqued to 15 lbs? GM sensors?

[OutstandingSilverado]

are the knock sensors torqued to 15 lbs? GM sensors?

Yes and both a brand new along with the wire harness, though funny thing is
I only get a DTC on bank 1 sensor never bank 2

[Fast4.7]

I had a stockish 1999 5.3 that was false knocking badly. Swapped to a 2002 operating system and the problem vanished completely with no other changes.

[compsystems66]

try putting your knock sensor tables back to stock, they are all over the place.

[OutstandingSilverado]

I had a stockish 1999 5.3 that was false knocking badly. Swapped to a 2002 operating system and the problem vanished completely with no other changes.

I've actually have no idea how to swap over to a newer OS to be honest

[OutstandingSilverado]

Will do
Thanks

[OutstandingSilverado]

comments, suggestions, ideas?

anyone see anything I should beware of that im missing