First Log, high knock, With chart.

[SlowChild3]

Hey guys, I know your tired of hearing the first log bs.
Small 16g 13lbs. I'm getting 41 knocks at 6093,
Fuel Trim Low 98.4 Med 107.9 High 104.6 my rear o2 stays steady at .87-.93.
injector duty drops as knock rises. Timing stays at 14 to 19 at wot
I did 3rd from 25oo to 6000rpm maybe I'm not seeing somthing that corellates with the knock.


Thanks in advance.

 

[SlowChild3]

TIME TIMA TPS RPM KNCK INJP O2-F
16:24:13 38° 31.8% 2469 0 5.38ms 0.99V
16:24:13 27° 63.9% 2344 0 6.91ms 1.19V
16:24:14 26° 90.2% 2500 0 7.68ms 1.38V
16:24:14 25° 90.6% 2563 0 8.19ms 1.50V
16:24:14 23° 91.0% 2594 0 8.70ms 1.62V
16:24:15 21° 91.0% 2719 0 9.22ms 1.79V
16:24:15 21° 91.4% 2844 0 9.98ms 1.93V
16:24:15 19° 91.4% 2813 0 11.01ms 2.09V
16:24:16 18° 91.4% 2906 0 12.03ms 2.28V
16:24:16 17° 91.4% 3094 0 13.31ms 2.38V
16:24:16 16° 91.4% 3094 0 14.34ms 2.63V
16:24:16 16° 91.4% 3281 0 14.85ms 2.69V
16:24:17 16° 91.4% 3250 0 15.36ms 2.96V
16:24:17 15° 91.4% 3469 0 15.62ms 3.14V
16:24:17 15° 91.4% 3563 3 16.13ms 3.22V
16:24:17 14° 91.4% 3531 2 16.38ms 3.43V
16:24:18 15° 91.4% 3656 2 16.38ms 3.65V
16:24:18 16° 91.4% 3750 1 16.38ms 3.72V
16:24:18 16° 91.4% 4063 1 16.64ms 3.90V
16:24:19 17° 91.4% 3938 0 16.90ms 4.08V
16:24:19 18° 91.4% 4219 0 17.41ms 4.10V
16:24:19 18° 91.4% 4281 0 17.41ms 4.31V
16:24:19 18° 91.4% 4469 0 17.66ms 4.41V
16:24:20 18° 91.4% 4531 0 17.66ms 4.45V
16:24:20 18° 91.4% 4625 0 17.66ms 4.43V
16:24:20 18° 91.4% 4625 0 17.92ms 4.56V
16:24:20 19° 91.4% 4781 0 17.66ms 4.66V
16:24:21 19° 91.4% 5000 0 17.66ms 4.80V
16:24:21 19° 91.4% 4969 0 18.18ms 4.97V
16:24:21 19° 91.4% 5031 0 17.66ms 4.95V
16:24:21 20° 91.4% 5281 3 17.66ms 4.93V
16:24:22 20° 91.4% 5219 2 17.41ms 4.97V
16:24:22 21° 91.4% 5406 2 17.41ms 4.97V
16:24:22 20° 91.4% 5469 2 17.92ms 4.97V
16:24:22 21° 91.4% 5625 1 16.90ms 4.82V
16:24:23 22° 91.4% 5500 7 17.15ms 4.97V
16:24:23 20° 91.8% 5531 13 16.13ms 4.91V
16:24:23 17° 91.8% 5688 20 15.62ms 4.76V
16:24:23 16° 91.8% 5938 20 16.38ms 4.97V
16:24:23 20° 91.8% 5875 25 16.64ms 4.97V
16:24:24 17° 91.8% 5906 32 16.38ms 4.97V
16:24:24 16° 91.8% 5875 36 16.38ms 4.95V
16:24:24 14° 91.8% 5969 35 15.10ms 4.95V
Maybe this will help some one reply.

 

[NOSLO2PT0]

Not sure what value that last column is, but you need to log the actual o2 voltage. Should be between 0-1.0V Normal reading should be .95V or so. Your logs look good, up until 5500rpm. Add 10% fuel from 5500rpm and up, and see if your knock goes away. Also, adjust your TPS so the logger reads 100%. Should read 10% at idle.

Looking at your posts, I'll assume you have a 1G. You don't have a front/rear O2. You only have a front O2. You say your REAR o2 readings stay between .87 -.93. That's the value I want to know. Log that. On 93 octane, try to keep the o2 value around .90V or slightly higher. Any lower than that and you are running a bit lean. Like I said, add fuel where you see knock. Report with results.

 

[ChiGGz]

What o2 values should you expect on a 2g running 94 octane?

 

[NOSLO2PT0]

What o2 values should you expect on a 2g running 94 octane?

You should be able to get away with anything in the low .9xV range. I would start by trying to keep it around .95V, then slowly lean it out until you start to see your timing drop, as that means you are knocking.

 

[ChiGGz]

So the rear o2 value reads how much oxygen is left in the exhaust in the form of a voltage? Does more o2 cause you to be lean or rich.

Im probably WAAAYYY off track

 

[SlowChild3]

Rather than posting another log when knock start 15+ my o2 reads .00v and .01, I turned the boost down also, to 10 lbs. My TPS is at 99.6, good enough. I don't have a fuel system yet, I wanna make sure I get it running good befor I go out and spend a bunch more money. Just want to tune as stock. Should I start retarding the cam senosr?

WHen I did 2 other logs the o2 stayed at .95-.97 and had a good 5-6 knock count. Bad o2?

 

[NOSLO2PT0]

So the rear o2 value reads how much oxygen is left in the exhaust in the form of a voltage? Does more o2 cause you to be lean or rich.

Im probably WAAAYYY off track

Ignore the rear 02 value. Means nothing. Also, the HIGHER the o2 voltage, the richer you are.