got the a-tap logs finally

[Only4U]

A-TAP LOG IS DOWN A FEW REPLIES...

[ February 20, 2003: Message edited by: Only4U ]</p>

[NBMA4V6]

fyi my car does the same thing.. runs much better as in less knock with 93 octane. i doubt there is anything wrong and this is somewhat normal. 87 octane it was knocking much like your car is

[Seppo Kaitainen]

I saw 4-6 degrees of knock at WOT with 87 octane. Its fine for driving around town, but not for racing.

[eurokiller1]

Try putting 104 octane gas in your car and see if you are still getting any knock. Then you will know if it is the exhaust leak making false knock, or if you are getting real knock

[Ironman24]

I bet that ticking you hear is not your injectors but the exhaust leak. Exhaust leaks sound just like a ticking injector.

[Only4U]

that's a good point ironman. NOW, just assuming that 6 of the degrees of the knock retard from the original 10 were cured when i raised the octane level of the gas, then do you think it's possible that the exhaust leak may cause the other 4 degrees?

[Bird_Of_Prey]

<blockquote>quote:</font><hr>Originally posted by Only4U:
that's a good point ironman. NOW, just assuming that 6 of the degrees of the knock retard from the original 10 were cured when i raised the octane level of the gas, then do you think it's possible that the exhaust leak may cause the other 4 degrees?<hr></blockquote>

Man, that's a really big assumption. Why don't you fix the couple obvious things like the exhaust leak and then go from there. Don't what if, in the time you've been posting and replying, you could have fixed it already!!!! Get to work [img]smile.gif[/img]

[eurokiller1]

<blockquote>quote:</font><hr>Originally posted by Only4U:
that's a good point ironman. NOW, just assuming that 6 of the degrees of the knock retard from the original 10 were cured when i raised the octane level of the gas, then do you think it's possible that the exhaust leak may cause the other 4 degrees?<hr></blockquote>

Try doing what I said above to find out if the remaining knock is is really false. I know I am not ironman or magnus, but I still know a lot about knock, because it is a big issue with grand prixs. You really cant hear much of the knock while you are driving, so you can't just assume that the rest of the knock is false. Raising the octane from 87 to 93 probably wouldn't take away 10 degrees of knock, assuming that all the knock is real. If you put in 104 octane gas and you are still getting knock, then you will know for sure that the remaining 4 degrees is false and could be coming from the exhaust leak. If there is no 104 available, then buy some xylene and mix it with your gas. This, and fixing the exhaust leak are the only 2 ways to find out if it is the exhaust causing the rest of the knock.

[ February 19, 2003: Message edited by: eurokiller1 ]</p>

[Magnus]

Run 93 always, stop going back and forth from 87 to 93, you're confusing the PCM.

Fix the ehxuast leaks NO MATTER WHAT.. just do it.

make sure no exhaust pipes are banging.

THEN autotap again, what are your o2's, and timing?.. if you still see lots of knock that doesn't go away then try race gas.

[DEE97GTP]

When you first run 93 octane your knock should drop a good amount since your PCM has learned the 87 octane.

You really need to know the A/F and timing. You might log Ltrim, injector pulse width, O2 B1S1.

DEE

[Only4U]

Knock Retard(Deg) Air Fuel Ratio(:1) Knock Sensor Active Counter(Counts) Engine Speed(RPM) Long Term Fuel Trim Bank 1(%) Long Term Fuel Trim Bank 2(%) O2 Sensor - Bank 1 Sensor 1 (mV)() O2 Sensor - Bank 1 Sensor 2 (mV)() Injector Pulse Width #1(mS)
0 14.7 2 758 -0.8 0.8 85 885 3.92
0 14.7 2 832 -1.6 -0.8 730 870 6.38
0 14.7 2 1450 -4.7 -3.9 40 705 4.53
0 14.7 2 1515 -7 -7 35 75 4.83
0 14.7 2 1519 -7 -7 80 75 4.91
0 14.7 2 1564 -7 -7 475 300 5.38
0 14.7 2 1636 -6.3 -7 640 830 5.03
0 14.7 2 1709 -6.3 -6.3 795 865 5.38
0 14.7 2 1752 -6.3 -6.3 750 925 5.73
0 14.7 2 1971 -5.5 -6.3 795 790 5.53
0 14.7 2 2029 -5.5 -6.3 70 615 5.91
0 14.7 2 2121 -5.5 -6.3 50 540 6
0 14.7 2 2271 -3.1 -3.1 165 515 8.62
0 14.7 2 2580 0 -0.8 735 790 8.82
0 14.7 2 2887 0.8 -0.8 65 805 11
0 14.7 2 3158 1.6 -0.8 750 680 13.1
0 14.7 2 3621 3.9 1.6 780 895 16.99
0 12.3 2 4096 7 5.5 885 965 17.95
0 12.3 2 4297 10.2 8.6 905 960 17.98
0 12.2 2 4551 13.3 11.7 910 970 18.6
3 12.1 4 4872 16.4 14.8 930 975 18.68
2.7 12 4 5160 16.4 14.8 920 980 18.54
2.4 11.9 4 5439 16.4 14.8 925 980 17.43
2.1 11.8 4 5650 16.4 14.8 920 980 19.08
1.8 12.2 4 4255 16.4 14.8 925 980 19.2
1.6 12.3 4 4135 16.4 14.8 900 970 19.32
1.3 12.3 4 4242 16.4 14.8 910 965 18.77
1.1 12.3 4 4297 16.4 14.8 890 970 19.04
0.7 12.3 4 4369 16.4 14.8 885 970 18.83
0.4 12.2 4 4413 16.4 14.8 900 970 18.74
0.2 12.2 4 4489 16.4 14.8 890 970 19.11
0 12.2 4 4535 16.4 14.8 900 975 18.53
0 12.2 4 4648 16.4 14.8 895 970 18.66
0 12.2 5 4749 16.4 14.8 910 965 18.15
1.8 12.1 6 4854 16.4 14.8 905 965 18.5
3.6 12.1 6 4909 16.4 14.8 895 965 18.91
3.3 12.1 6 4984 16.4 14.8 900 970 17.63
3 12 6 5061 16.4 14.8 905 965 18.51
2.7 12 6 5160 16.4 14.8 905 965 18.21
2.5 11.9 6 5181 16.4 14.8 895 965 17.63
2.2 11.9 6 5328 16.4 14.8 895 975 17.55
1.9 11.9 6 5372 16.4 14.8 890 965 18.01
1.6 11.8 6 5484 16.4 14.8 895 965 18.15
1.3 11.8 6 5530 16.4 14.8 880 970 17.95
1.1 11.8 6 5625 16.4 14.8 895 965 17.8
0.8 11.8 6 5650 16.4 14.8 870 955 16.18
0.5 11.8 6 5774 16.4 14.8 890 960 16.65
0.3 11.9 6 4801 16.4 14.8 870 945 16.62
0 14.7 6 4174 16.4 14.8 820 905 2.19
0 14.7 6 3269 12.5 11.7 900 945 2.16
0 14.7 6 2979 9.4 7.8 890 955 2.01
0 14.7 6 2560 6.3 4.7 590 935 0
0 14.7 6 2074 3.1 1.6 0 45 0
0 14.7 6 2004 0 -1.6 5 20 0
0 14.7 6 1947 -3.1 -4.7 5 10 0
0 14.7 6 1894 -7 -7.8 0 5 0
0 14.7 6 1830 -7.8 -10.9 5 5 0
0 14.7 6 1752 -7.8 -10.9 0 0 0
0 14.7 6 1674 -7.8 -10.9 5 0 0

[ February 20, 2003: Message edited by: Only4U ]</p>

[Only4U]

timing is actually the one thing not logged. don't blame me, i had no idea how to run a-tap, my friend was doing it and i guess just forgot.

the above log is the first run, i have 2 others if anyone wants to see them...

it appears my knock is coming at some odd times--which means it's probably false???

also, i'm running damn rich, aren't i?

this is on 93 octane, btw.

[ February 20, 2003: Message edited by: Only4U ]</p>

[strobhen]

Your O2's are hanging right around the .900 mark, and a bit above. They look pretty darn stock to me. So yeah, your running rich (most cars do out of the factory), but not ridiculously rich.

As for your timing problem. What plugs are you running? At what gap? (A larger-than-stock gap can cause a little kr)

I had some problems advancing timing w/ the TR55s. I just put in TR6's and viola, I have a good bit more headroom. (Colder range plug)

The way you can tell false from real knock is that real tends to be more consistant than false and increases with rpm. False on the other hand is usually just one spike and then your timing recovering afterwards.

[ March 04, 2003: Message edited by: strobhen ]</p>