Heads/Cam 5.3 Knock Retard

[Garett7485]

N/A Setup
CNCed and Milled heads(compression is around 9.9/1)
High Lift Baby Cam on a 110LSA
Stock 5.3 LM7 Bottom End
TBSS Stock Injectors(in the Stock Return Style 5.3 truck intake)
Longtube headers
160 thermostat
Yank Truck Thruster 2600 Stall on 4l60E
PCM is from a 2000 GMC Sierra

I got a base tune and I have made some minor changes of my own in various areas. I cannot seem to figure out how to kill the KR I am getting from 3400RPM on up.

None of these changes have made any difference in the amounts of KR.

I have enriched PE just before, during, and after these higher KR areas
I have pulled a few degrees of timing in these areas as well.
I have done both at the same time.
I am down to 12 degrees of advance at times during WOT.
I always only run 93.
I have tried adding octane Booster on a low tank.
I have checked and rechecked for vacuum leaks with carb cleaner etc.

It is not some background setting like Torque Management, Traction Control, or Burst Knock from what I can tell.

This was my first build/tune/ etc. I rarely if ever post, but I am finally able to say I think/hope I exhausted the most common simple solutions so that I don't annoy anyone.

Any ideas/suggestions are appreciated.
Thanks in advance,
Garett

[Garett7485]

Anyone?

[Higgs Boson]

set your timing to 1, command 12.5:1(and make sure you are getting it) and run some race gas (unleaded) and see if it still shows up. it's probably false knock, you need to disable burst knock for sure (i haven't looked at your tune) and possibly add 10% or so to your knock sensors in the problem area.

do you hear any pinging?

[Garett7485]

set your timing to 1, command 12.5:1(and make sure you are getting it) and run some race gas (unleaded) and see if it still shows up. it's probably false knock, you need to disable burst knock for sure (i haven't looked at your tune) and possibly add 10% or so to your knock sensors in the problem area.

do you hear any pinging?

I can't make out anything out of the ordinary over the sound of the exhaust(it's pretty loud). I had trouble finding unleaded race gas around me so I ran the tank low and added a good amount of Octane booster with zero change. My wideband confirms my AFR is within a few percent after entering PE. I have set burst knock pretty high in the problem area, but I have not changed the knock sensor settings themselves yet.

I will try dropping the timing down, but I am already on the low end of decent timing advance(running 93 only) on a Heads/Cam 5.3 right?

Thanks Again Man

[Higgs Boson]

if you keep removing timing with no change it is false knock.

put your timing back and reduce the sensitivity of the knock sensors little by little (5% or less at a time) until it gets minimal to none.

[jason k]

why unleaded race fuel I am fighting with false knock ( I think ) and I am running vp110 leaded should I try unleaded?

[Garett7485]

why unleaded race fuel I am fighting with false knock ( I think ) and I am running vp110 leaded should I try unleaded?

Leaded fuel ruins O2 sensors from what I understand. My Wideband specifically said do not use it. I think it shortens their lifespan.

[jason k]

Yes it absolutely does My wideband says it will foul them in about 10 hours. But I was under the impression that the leaded fuel also helps with detonation Although I don't know for sure