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Old 08-08-2004, 11:53 PM   #1
CMJ
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Default Possible knock? Logs inside.

I've just started exploring the utec and have a few questions. Does the low timing that the ecu wanted to run just after shifting to 2nd indicate it detected knock?

This is a TXS 93oct Stage4 OLF 4.2 map that I have made lots of changes to so it will run on 91oct. I don't have a wide band yet.

Thanks,
Chris

Mods:
vf22
sti inj.
up pipe
down pipe
Walbro
MBC
water injection

2021, +0.4,2.4,102, 10, 00, 14.7,+32.0, 10.3,+32.8, -0.4,250.00,2.3
2178, +0.6,2.5,102, 10, 00, 14.1,+34.6, 11.5,+32.2, -0.5,250.00,2.3
2575, +0.8,2.6,102, 10, 00, 12.1,+34.0, 13.9,+32.0, -0.4,250.00,2.4
2686, +1.2,2.7,103, 10, 00, 12.4,+33.0, 15.6,+32.0, -0.3,250.00,2.6
3041, +1.9,2.9,102, 20, 00, rich,+32.3, 19.4,+30.0, +0.4,250.00,2.7
3356, +2.3,3.0,103, 20, 00, rich,+31.5, 24.2,+29.2, +0.5,250.00,2.9
3599, +3.1,3.2,102, 20, 00, rich,+31.2, 30.3,+27.6, +0.5,250.00,3.0
3954, +4.3,3.3,103, 30, 00, rich,+29.1, 38.3,+25.0, -0.2,250.00,3.1
4363, +5.9,3.6,102, 40, 00, rich,+24.1, 50.4,+23.6, +0.2,250.00,3.5
4701, +8.4,4.0,101, 60, 00, rich,+20.4, 68.8,+17.0, +0.9,250.00,3.8
5333,+11.2,4.2,101, 80, 00, rich,+23.5, 78.9,+19.0, -1.0,250.00,3.9
5747,+14.1,4.3,101, 90, 00, rich,+23.0, 85.1,+19.1, -0.7,250.00,3.9
6265,+15.7,4.3,101, 90, 00, rich,+24.4, 91.5,+20.0, -0.9,250.00,4.0
6613,+17.0,4.4,101, 90, 00, rich,+27.5, 91.8,+21.0, -0.9,250.00,4.0
5995,+13.5,2.4, 0, 00, 00, 13.2,+11.0, 12.2,ECU. , -1.0,ECU. ,2.2
5837, +6.8,2.2, 0, 00, 00, rich,+10.7, 10.4,ECU. , -1.0,ECU. ,2.0
5602, +0.2,2.2, 0, 00, 00, 12.1,+11.1, 9.9,ECU. , -1.0,ECU. ,2.0
5376, -7.1,2.2, 0, 00, 00, rich,+10.7, 9.5,ECU. , -1.0,ECU. ,2.0
5089,-10.4,2.1, 0, 00, 00, rich,+10.8, 9.4,ECU. , -1.0,ECU. ,2.0
4967, -9.2,3.4, 63, 10, 00, 13.9,+21.3, 38.4,+28.0, -0.8,ECU. ,3.1
4050, -5.7,3.5,102, 10, 00, rich,+28.2, 40.2,+31.0, +0.0,250.00,3.2
************************************************** *****
4130, -1.4,3.5,102, 30, 00, rich, +9.6, 43.9,+25.0, -0.3,250.00,3.2
4151, +4.1,3.6,102, 50, 00, rich, +8.9, 49.4,+17.5, +0.5,250.00,3.4
************************************************** ******
4203, +8.6,3.8,103, 60, 00, rich,+17.9, 58.3,+16.0, +0.8,250.00,3.6
4306,+11.6,4.0,102, 70, 00, rich,+18.7, 64.2,+16.0, +0.9,250.00,3.7
4444,+14.7,4.0,102, 90, 00, rich,+19.6, 68.5,+16.0, +1.0,250.00,3.7
4597,+16.7,4.0,101,100, 00, rich,+20.7, 72.0,+16.4, +1.0,250.00,3.8
4734,+18.4,4.1,101,100, 00, rich,+22.3, 74.1,+17.1, +0.8,250.00,3.8
4894,+19.6,4.2,102,100, 00, rich,+22.8, 77.0,+17.6, -0.3,250.00,3.8
5120,+19.4,4.2,101,100, 00, rich,+23.1, 76.3,+18.4, -0.5,250.00,3.8
5299,+18.8,4.2,102, 90, 00, rich,+23.3, 83.3,+19.0, -0.9,250.00,3.9
5428,+18.0,4.3,102, 90, 00, rich,+24.0, 82.6,+19.0, -0.9,250.00,3.9
5546,+17.4,4.2,101, 90, 00, rich,+23.1, 86.1,+19.0, -0.8,250.00,3.9
5659,+18.0,4.3,101,100, 00, rich,+23.5, 85.6,+19.0, -0.7,250.00,4.0
5858,+18.0,4.3,102,100, 00, rich,+23.5, 84.6,+19.2, -0.6,250.00,4.0
6082,+17.8,4.3,102, 90, 00, rich,+23.5, 90.3,+19.8, -0.8,250.00,4.0
6127,+18.4,4.4,102, 90, 00, rich,+23.4, 89.1,+20.0, -0.5,250.00,4.0
6172,+18.0,4.4,102,100, 00, rich,+24.1, 91.4,+20.0, -0.8,250.00,4.0
6361,+18.2,4.4,102,100, 00, rich,+26.2, 93.7,+20.3, -0.8,250.00,4.0
6397,+18.4,4.4,101, 90, 00, rich,+27.1, 92.5,+20.8, -0.9,250.00,4.0
6574,+17.8,4.4,102, 90, 00, rich,+27.4, 91.6,+21.0, -0.9,250.00,4.0
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Old 08-09-2004, 02:33 PM   #2
CMJ
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bump
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Old 08-09-2004, 03:27 PM   #3
bikerboy
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No knock count in that log, It is the collumn next to the front narrow band AFR readings
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Old 08-09-2004, 03:39 PM   #4
cdvma
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If the UTEC doesn't pick up the knock, the stock ECU wont either.
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Old 08-09-2004, 04:36 PM   #5
CMJ
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Well why did the ecu drop timing from 28deg to 9deg under wot?
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Old 08-09-2004, 05:35 PM   #6
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Quote:
Originally Posted by CMJ
Well why did the ecu drop timing from 28deg to 9deg under wot?

Utec timing and ecu timing are different that just shows what the ecu would run if it were in charge.

RTFM= "read the f**c*ing manuel" as Turboxs says, guess they like that abreviation.

Dont take that personal it is a TXS term that we all find it funny.

Last edited by bikerboy; 08-09-2004 at 05:47 PM.
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Old 08-09-2004, 06:50 PM   #7
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Quote:
Originally Posted by cdvma
If the UTEC doesn't pick up the knock, the stock ECU wont either.

Pretty much, looks ok to me.

As above, look at the MOD timing value, thats all that matters once over the threshold.
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Old 08-12-2004, 02:20 PM   #8
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Hey Chris.. Looks like a good start.. For Heavens sake... get a WB man.. The Tuner is nice because it outputs to the logs. I use the LM1 myself.

You can certainly look at the ECU advance numbers to get an idea of how happy the ECU is. Keep in mind that the stock ecu is WAY more sensitive to knock then the Utec's default settings are. Your dip in advance happend right after the shift and it happend on spool up around the trq peak of the motor. Bottom line.. The stock ecu had yanked timing there.. Look at the MAF voltage. I have been doing this long enough to know where 3.5 volts is on the ecu's map The best way to do this is to use Delta dash logging.. Look at the ECU's Ignition correction. If you are not getting a good +5 or more advance and or your multiplier has dropped you are probably knocking a bit..

Side note.. make sure you have your Utec set to Gauge mode for the MAP sensor.. If its set to the default setting your Utec log readings could be 2 to 3 psi less reading.. You are running way, way to much boost and if you are in abosolute you are running WAY, WAY, WAY to much boost. On 91 CA gas its best to keep that boost down to 17 psi in gauge mode.. Keep AFR's Nice and rich in the high to mid 10's. total advance will be somewhere around 20-24 degrees.. Things can certainly change depending on your mods. FMIC/water spray/water injectiona and things of that nature can allow more boost.

HTH

Clark
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Old 08-12-2004, 05:11 PM   #9
CMJ
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Thanks Clark,

I had a feeling the ecu was detecting knock. The utec is set to gauge mode and yes the boost was high on that run but I always have the water injection on.

Side note: My Delta Dash only logs 13.8psi with same settings and I'm sure it's right up in the 18psi range.
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Old 08-12-2004, 05:18 PM   #10
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yeah.. You need to get a WB Chris.. You are probably PUKE rich. Thats my guess. The 4.2 OLF mode factory settings are almost always off. Pay REAL close attention to your AFR corrections 1 2 and 3... Adjust both injector scale settings up and down in the same increment until the AFR corrections are right or close to 0.. You may have to edit the 0 column some. Once those corrections are good you will need to check AFR in open loop and adjust as needed.

On the timing map.... Try this: Run 30 in the 10 column all the way down.. Run 27 in the 20 column all the way down and run 23 in the 30 column.. Fade the map out from there.. I also like to set the OLF Cross over point to 30-33. If you are cruising on the highway you can be stuck in OLF all the time at highspeeds and mileage will suffer.

Cya

Clark
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Old 08-12-2004, 05:51 PM   #11
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Delta dash will not give an accurrate response on boost when using a utec. I'm not sure why, but someone certainly can chime in on that.
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Old 08-12-2004, 06:03 PM   #12
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because the UTEC clamps manifold pressure to around 1 bar. It won't tell the ECU anything above that unless you trigger the hardware fuel cut (20+ PSI at that point).

Jorge (RiftsWRX)
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Old 08-12-2004, 06:07 PM   #13
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While thats true it has no bearing on this thread... In this log its clearly under 14 psi where the ECU is producing low advance numbers. I looked at Chris's rom file and noticed that he was at Zero correction at that point.. Must be super rich or lean there... Its def knocking.

Cya

Clark
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