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I can't seem to get rid of knock while cruising. It's mostly while in 6th gear between 1500-2000 rpms at 60-80 kpa, around 10-20% tps.
My BLMs are perfect (tuned for leanest bank due to split BLMs) and my timing table is stock. I've even taken out 1-2 degrees of timing to see if it would help. From looking at a graph of the knock counts and tps, it almost looks like I get knock when coming off or decreasing the throttle. In the EEHack knock map, it shows red PE knock at things like 40 kpa, which is obviously not possible, but it looks like it's when coming out of PE that the knock occurs. Other times the knock happens exactly when PE mode is activated, even though the timing doesn't change.
I've had a few runs with very minimal knock, but that is only accomplished by enabling spark skew in EEHack and retarding the timing 2-3 degrees. I don't mind or notice the cruise knock so much, but it's very noticeable when it happens at WOT at 2500, even after I've retarded the timing.
Is there something I'm overlooking? Attached is my current tune and datalogs from the past few days.
Your sig says you have 1.6 rockers. I am assuming they're rollers. If so, you could have valvetrain noise that's being picked up as knock. Can you audibly hear it yourself or does it just show on the logs?
You have more knock at 3k-4k and it doesn't look like you have pulled timing there. Maybe look there as well if its truly audible
I have 1.6 non-roller rockers. I am running 91 octane around Vancouver, BC. Elevation ranges from about 30 to 130 feet. This is happening on a flat freeway in a stock weight car.
I don't hear the cruising knock but sometimes I can hear the WOT knock.
Just for fun this morning I ran it with -3 timing and only got a tiny bit of WOT knock and I think some at a low kpa, so probably when I got out of the throttle.
I have the Lunati 270/279 EFI cam with these specs:
Duration (Int/Exh): 270/279; Duration @ .050 (Int/Exh): 209/213; Gross Valve Lift (Int/Exh): .416/.447; LSA/ICL: 112/108; Valve Lash (Int/Exh): Hyd/Hyd; RPM Range: 1500-5200;
Does the increased cam duration over stock mean that I need to lower timing to compensate?
In this tune I didn't pull any timing at WOT but I have in other tunes. I just didn't want to butcher my spark table way below stock if there is a better way of handling this so I went back to a stock table to work from.
Chevron has 94, I've used it before but didn't really pay attention to whether or not it made a difference. I need to fillup anyways so I could get a tank tonight and see if that helps.
Many completely stock vehicles will record knock retard intermitently. If it is a intermitently pulling a couple of degrees and not constant I really don't worry too much about it.
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Knock while cruising 
