IRVINEWS6

My LTFT's are negative; however, I am getting a lot of knock. Do I need to reduce my timming? If so, how do I do it with LS1 Edit?

Thanks

The Dragon

iTrader: (6)

First I wanna make sure you are using a diagnostic tool like AutoTap to get your parameters. Second; easy diagnosis first: how are your plugs and wires (gap, mileage, wear, etc.)?

Next.
Are your LTFT's negative at part-throttle or do they show anything other than 0 at WOT? Are you getting knock at part-throttle or WOT? Please list in which fuel trim cell any of this occurs.

Have you adjusted your LTFT's? If so how eg: Injector Flow Rate Table or MAF table?

Have you modified your stock timing?

IRVINEWS6

I am using EFiLive's latest version.
NGK TR-55,s and stock wires. Seem fine.
LTFT's are negative at part throttle. O at WOT
Knock is while accelerating between 1,200 - 2,800 RPM's.
Also have knock at WOT.
I adusted my IFR table to reduce LTFT's. I have a stock MAF.

The Dragon

iTrader: (6)

Try swapping out the wires for a better set.

At part throttle it sounds like you're just over-loading the engine eg. too much throttle at low rpm. Possibly not giving the engine enough time to catch up so to speak.

How much Knock at WOT? Does this occur at the same rpm each time? Is the degree of Knock consistent? Could be false knock due to exhaust note or rattling in the exhaust. Possibly fouled knock sensors.
Did you modify timing at WOT? What is your average timing at WOT?

The high octane spark advance table in the ignition section of Edit is what you would modify for part/wot.

.6 gm/cyl and greater for wot beginning at the rpm where you see knock.
Edit this in increments of 1.

Part throttle can be modified too but let me know exact integers of knock for part/wot.

Thanks.