First logs. Help.

[tjc]

TIMA TPS RPM KNK INJ Duty %
38.00 13.33 2562.50 0.00 0.00
38.00 29.80 2687.50 0.00 22.00
27.00 100.00 2781.25 0.00 25.00
25.00 100.00 2937.50 0.00 31.00
23.00 100.00 3062.50 0.00 41.00
19.00 100.00 3218.75 0.00 50.00
17.00 100.00 3375.00 0.00 52.00
18.00 100.00 3531.25 0.00 54.00
18.00 100.00 3687.50 0.00 57.00
19.00 100.00 3875.00 0.00 60.00
20.00 100.00 4031.25 0.00 63.00
20.00 100.00 4125.00 0.00 67.00
20.00 100.00 4312.50 0.00 71.00
20.00 100.00 4468.75 0.00 74.00
20.00 100.00 4656.25 0.00 80.00
19.00 100.00 4812.50 0.00 84.00
19.00 100.00 5000.00 0.00 88.00
20.00 100.00 5125.00 0.00 91.00
21.00 100.00 5281.25 0.00 93.00
21.00 100.00 5437.50 0.00 98.00
22.00 100.00 5500.00 0.00 97.00
23.00 100.00 5625.00 0.00 98.00
25.00 100.00 5687.50 0.00 101.00
24.00 100.00 5781.25 0.00 101.00
26.00 100.00 5937.50 0.00 105.00
25.00 100.00 5937.50 0.00 105.00
26.00 100.00 6062.50 0.00 106.00
26.00 100.00 6062.50 0.00 106.00
26.00 100.00 6250.00 0.00 109.00
25.00 100.00 6312.50 0.00 110.00
24.00 100.00 6343.75 0.00 112.00
24.00 100.00 6406.25 0.00 112.00
23.00 100.00 6562.50 0.00 116.00
22.00 13.33 6343.75 0.00 8.00


Here is my first log on a 3rd gear pull. Boost is 8-9 psi per autometer gague tapped into intake manifold. Turbo is small 16g, stock FPR, MSD fuel pump (162 lph) and stock 450 injectors. I have no intercooler.

1) Does complete lack of knock mean my knock sensor does not work? It is old and drippy.

2) Why is the injector duty maxed? Air intake temp is 127 degrees F but that measurement would not change with an intercooler b/c it is taken at the MAF.

I hope I did not break anything running too lean.

[DJpowerHaus]

You should be able to tap on the block with a hammer (not too hard) to get the ring you'd get from knock. See if that registers. If not maybe you could swap knock sensors?

Not sure about the duty cycle thing. What ECU are you using?

[tjc]

91 ecu
i'll try and test the knock sensor

i am worried b/c i do not want to turn up the boost if i am maxing the injectors at 9 pounds-i was hoping to go to 14 psi on the "stock" fuel system

[DJpowerHaus]

What do your A/F ratios look like?

[tjc]

Unfortunatly I don't have a wideband O2 sensor.

[Mike]

What is your stock o2 sensor reading?

[tjc]

During that run it reads 0.87V the entire time, then drops to 0.01 when I got off the gas.
Same reading for a run right after that.
Is that accurate enough to say not too lean?

[Mike]

That sounds a bit lean. You should be in the .90V+ range if you want to be safe.