Do you guys turn off the knock sensors at a certain rpm and above, leave them alone, or turn down the senseativity. I'll have to plug in my scanner and do a pull to see what my timing is at

 

How much boost: 13psi
boost: turbo, A2A
fuel: pump 93, 50% meth 17gph
target AFR: 0.78 lambda
compression: stock 706 heads, ls9 gaskets
timing: 18

 

I just increase the ramp in rate when it pulls timing. So if it detects knock and pulls a degree, i have it ramp back up to full timing quicker than stock does.

 

Recovery is a bit quicker, but sensitivity is the same or actually more sensitive.

 

If youre detonating in boost it doesnt matter what your knock sensor settings are.

 

Tune up thats been on the truck about a year now.

How much boost: 20psi
what type of boost: T4 S480/92 1.10
What type of fuel: pump E85
target AFR: 11.0-11.5 on gas scale
compression: 9.5:1 5.7L, stock 317s, LS9 head gaskets
max timing: 15.0 thru peak Tq, 17.0 up top thru 7,000

 

How much boost: 25psi
what type of boost: T4 S484/96 1.25
What type of fuel: E43
target AFR: 11.2-11.4 on gas scale
compression: 9.0:1 6.3L, stock 317s, LS9 head gaskets
max timing: 18.0 thru peak Tq, 20.0 up top thru 6700

 

I'm so jelly of you 240kpa + guys

Mines very Similiar to your Vortec, likes the lower timing .

 

How much boost: Avg ~12psi (figuring out some boost spike issues)
what type of boost: Kenne Bell 2.8L
What type of fuel: pump 93oct E10
target AFR: .78Lambda / 11.45 gas scale
compression: 9.5:1 6.1L, TEA/TFS 245 heads, LS9 head gaskets
max timing: 20* across the board

I am still tuning to find what this setup likes. Previous setup with smaller cam and hand ported 241 heads on 15psi liked 20-22* timing dependent on air temp. Lower timing gained ET and lost MPH. With a more efficient combustion chamber, this setup may actually like less timing.

 

It's great to see so many replies to this. I wish there were more supercharger guys who would chime in... seems theyre all in hiding. Turbo's rule the roost now anyway... I know I'll never compete on the big end with you guys.

I may try 16 on one of my next test runs... possibly 17 as revs climb to help with top end even more. I used to be able to pull 6300 RPM with the cam NA but the last new times out it kind of felt as though it was dropping off a little over 6k... maybe more timing will help that.