General cant get rid of this knock

[overboostedtsi]

Whatever i do i cant seem to get rid of this knock, could someone give me some pointers on my log and what to do.

RPM KNOCK TIMING O2 TPS
2656 | 0 | 22 | 0.92 | 100.0
2719 | 0 | 19 | 0.94 | 100.0
2906 | 0 | 16 | 0.94 | 100.0
3031 | 0 | 14 | 0.94 | 100.0
3156 | 0 | 14 | 0.94 | 100.0
3281 | 0 | 15 | 0.96 | 100.0
3438 | 0 | 15 | 0.96 | 100.0
3688 | 0 | 16 | 0.96 | 100.0
3781 | 0 | 17 | 0.96 | 100.0
3938 | 0 | 18 | 0.96 | 100.0
4063 | 1 | 17 | 0.96 | 100.0
4219 | 0 | 18 | 0.96 | 100.0
4344 | 0 | 18 | 0.96 | 100.0
4406 | 0 | 18 | 0.96 | 100.0
4531 | 0 | 18 | 0.96 | 100.0
4781 | 0 | 18 | 0.96 | 100.0
4719 | 0 | 19 | 0.96 | 100.0
5031 | 0 | 19 | 0.96 | 100.0
5281 | 0 | 21 | 0.96 | 100.0
5250 | 7 | 18 | 0.96 | 100.0
5469 | 6 | 19 | 0.96 | 100.0
5438 | 6 | 20 | 0.96 | 100.0
5500 | 7 | 19 | 0.94 | 100.0
5594 | 6 | 21 | 0.96 | 100.0
5688 | 6 | 21 | 0.94 | 100.0
5844 | 6 | 21 | 0.94 | 100.0
5938 | 5 | 21 | 0.94 | 100.0
6094 | 6 | 22 | 0.94 | 100.0
5969 | 6 | 21 | 0.94 | 100.0
5969 | 5 | 21 | 0.94 | 100.0
6094 | 11 | 18 | 0.92 | 100.0
6281 | 11 | 19 | 0.94 | 100.0
6344 | 11 | 19 | 0.94 | 100.0
6313 | 17 | 16 | 0.94 | 100.0

 

[BenHenthorn]

Looks like you need to pull some fuel in the higher RPMs. I use DSMLink V.2 and from my experiences with fuel and knock, I know that you should want to shoot for an A/F ratio of 11:1. That seems to work best for most users, most of my knock came from being too rich in the higher RPMs. Did you record your A/F ratio? What else can you record with that pocket logger that will give us a clue as to airflow and MAF values?

Hope this helps.

 

[1SloColt]

What is your base timing set at and how many lbs of boost are you running? Normally on pump gas from all the 1g's I've helped tune, including my 90 motor/ecu, we pull base timing to run more boost with less knock because the stock ECU just creates too much timing. You are getting 21 degrees of timing at 5200rpm, thats crazy. Try reducing the base timing if its set at 5* BTDC to maybe 2. From there re tune it. Look for peak timing around 21 degrees at somewhere close to 6500 and then falls from there.

 

[overboostedtsi]

i figured it out. I had put a different o2 housing on and it wasnt letting the wastegate flapper open all the way, so i was getting boost creep which i didnt realize. i was adding fuel and it was really rich to try to get the knock down, i think that explains for the high timing.

 

[Burnett03]

i figured it out. I had put a different o2 housing on and it wasnt letting the wastegate flapper open all the way, so i was getting boost creep which i didnt realize. i was adding fuel and it was really rich to try to get the knock down, i think that explains for the high timing.

no, adding fuel will decrease, not increase timing