Help deciphering log

[nlzn]

Disclaimer: I posted this in the wrong section but I cant delete the thread

So, finally got MMCD running again.
My knock count is outrageous @ part throttle.

AFRs were holding 13.1-13.8 with around 10lbs of boost @ 40ish % throttle.
I didnt copy the timing table, it's mad retarded in this switching from +8 to +20 and back in forth during this knock window.

Knock sensor shot?

TPS RPM Knock
30. 2156 0
34. 2281 0
35. 2343 0
35. 2468 0
36. 2468 4
36. 2500 4
36. 2625 9
36. 2718 16
36. 2781 20
36. 2875 28
36. 2937 27
36. 3000 27
36. 3062 31
36. 3125 30
36. 3187 30
36. 3281 30
36. 3312 30
36. 3343 30
36. 3406 29
36. 3500 29
36. 3562 28
36. 3656 28
34. 3656 21
24. 3687 2
14. 3656 0
10. 3187 0
10. 3031 0
11. 3000 0

 

[MY1GDSM]

NO your knocking.....Why would it be shot?

 

[nlzn]

There's no logical explanation why it would knock.

AFRs are defintely overly rich.
Low boost and part throttle with 20ish degrees of timing.

Just don't really make for a knock ready condition in my mind.

 

[Ceddy]

13.8 is way to lean for boost.

Get that down to 11.5 to 12.0.

If you are knocking you needed to add fuel or remove timing.

 

[nlzn]

I dont really understand how 13ish can lean at part throttle.

@ WOT I'm running 10.4-10.6 @ 20lbs.

 

[MY1GDSM]

There's no logical explanation why it would knock.

AFRs are defintely overly rich.
Low boost and part throttle with 20ish degrees of timing.

Just don't really make for a knock ready condition in my mind.

Maybe if you were running Ethanol but on pump gas that's very lean... Add some fuel like Ceddy said and see where your base timing is at, Your timing in your log is useless if you don't know your base timing

 

[MY1GDSM]

I dont really understand how 13ish can lean at part throttle.

@ WOT I'm running 10.4-10.6 @ 20lbs.

You maybe at part throttle but your under boost.

 

[nlzn]

Base timing is @ 5, i set it last week.

 

[MY1GDSM]

How much fuel are you pulling for your 550's. ...you can get quite abit off timing advance from pulling fuel especially if your that lean under boost

 

[nlzn]

First off all I wanted to be clear, I have major creep issues @ part throttle.

Second, this issue is resolved.

My knock sensor was ooozing badly. Replaced. I redid the fuel a touch and it's sitting @ 10.9AFRs on 92 @ WOT @ 16lbs, 0 knock. Ill crank the boost when I can get some dyno time.

On part throttle now I register less than 2 counts of knock, I added a touch of fuel to richen it to 13:1ish under 3k.

The real problem is I'm running too small of a turbo for my setup and I really need to ditch the afc/logger combo for dsmlink.

 

[MY1GDSM]

Keep your mind about other ways to tune it, there's alot of other things out there besides Link

 

[Rob10_99]

Sensors get more sensative when the insulation runs out don't they =)

 

[hediki12]

glad you fixed the problem but still a little puzzled about the 13.1 afr.... in boost thats just tooo too lean. can you put up a log of ## timing knock rpm load tps and afr if the afr can be loged it will be a hella lot easier to help.