Help with knock!!

[konigtalon]

Hey there guys after finally getting my car started agian due to a key braking off. I got some logs tonight and need some with help with some knock im having I took two seperate logs one cruising, and one wot from 2nd gear pulls. My mods are Evo 3 16g, intake, 680cc, 2.5 exhaust, wideband, safc2, mbc, boost gauge, datalogger. Also my safc settings were on -19 for the hight settings here are the results please helo me. I made three seperate wot pulls.

Cruising
rpm 02 knock tima
1031 0.74 0 0
1718 0.60 1 2
1906 0.76 0 11
2718 0.68 0 16
3562 0.72 0 19
4562 0.85 0 18
I also got 1 count of knock numerous times at around 2400-2900 rpm with 19% tima and a 02 reading of 0.83v also around 3500 rps was the same

Wot Pulls
1st run
Rpm 02 knock tima mafs
1875 0.01 0 12 269Hz
2250 0.00 0 14 307
2718 0.85 0 15 439
4187 0.87 0 11 1236
5250 0.83 0 9 1330
5937 0.83 11 13 1229
6500 0.66 20 10 1091
2nd run
Rpm 02 knock tima mafs
2093 0.78 0 15 232Hz
2437 0.29 0 19 338
2937 0.85 0 14 520
3625 0.85 0 13 815
4468 0.85 0 8 1361
5000 0.60 0 35 106
3rd run
Rpm 02 knock tima mafs
1281 0.82 0 6 150
1937 0.80 0 17 207
2312 0.85 0 16 313
2843 0.87 0 15 483
3531 0.85 0 14 752
4312 0.85 0 10 1323
5312 0.83 0 10 1298
5968 0.82 15 12 1292
6500 0.80 21 11 1286

I also noticed that during some of my runs my 02 would drop to 0 man that is weird what does that mean? Also my fuel trims are pretty gooe my lo is 100 med 98.4 hi 98.4. Any input is greatly appreciated!!!

 

[Justin L]

If theres knocking, could be crank walk......

 

[absolute_DSM]

If theres knocking, could be crank walk......

Never assume that. Knocking is natural. 7 bolts can hold their own.

Knocking is too much heat causing detonation. So (in simplicity) lower the boost or up the fuel.

 

[Eastwood95]

What's your boost set to? Lower the boost or richen it up and log a few more pulls, ...........it looks like you're running way too lean, causing knock which pulls timing. Do your wideband readouts match your logs?

 

[DJYoshaBYD]

.82 seems too lean on your o2....add some fuel with that safc

 

[force it in]

Do you have the stock fuel pump? What are your wideband readings?

 

[Justin L]

Never assume that. Knocking is natural

"Could be" not assuming just putting in some advice. To me knocking isn't natural, atleast not in any of my motors

 

[kenamond]

"Could be" not assuming just putting in some advice. To me knocking isn't natural, atleast not in any of my motors

Maybe he meant "natural" as in - crankwalk is unnatural and his knock is just due to a bad tune.

 

[absolute_DSM]

Maybe he meant "natural" as in - crankwalk is unnatural and his knock is just due to a bad tune.

Im not saying a "bad" tune, an almost there tune.