Look at this log snipnet. The stock ecu goes from 11 degrees adv to +1. Now is it knocking and the utec not see it? The last column is target afr.



5411 -11.2 2.2 0 10 0 W/B 12.8 9.7 ECU. -4.6 ECU 2.3 11.11 13.7
5310 -9.6 2.6 3 10 0 W/B 17.4 16.6 ECU. -4.6 ECU 2.7 11.11 13.7
5250 -5.9 2.6 17 10 0 W/B 22.5 31.4 ECU. -4.8 ECU 3.1 11.11 13.7
5248 -1.0 3.4 40 10 0 W/B +0.9 43.7 04.2 -3.7 ECU 3.3 11.11 13.7
5252 +1.7 3.9 63 10 0 W/B 23.2 53.4 13.2 -5.0 ECU 3.6 11.08 13.7
5242 +3.7 3.9 73 20 0 W/B 25.2 67.0 19.2 -2.6 287 3.7 11.08 13.2
5156 +5.3 4.1 78 30 0 W/B 21.4 67.8 19.3 -0.7 287 3.8 11.05 12.7
5002 +7.6 4.2 83 40 0 W/B 19.1 75.2 16.8 -0.6 WGS 3.9 11.05 12.2
4675 +10.0 4.2 85 50 0 W/B 14.5 74.0 15.6 +0.6 WGS 3.9 11.05 12.0
4320 +12.7 4.3 87 50 0 W/B 11.8 73.4 14.9 -0.1 WGS 3.9 11.06 12.2
4155 +14.3 4.3 95 70 0 W/B +1.0 79.0 14.9 +0.4 WGS 4.0 11.06 11.4
4145 +15.7 4.3 100 70 0 W/B +1.0 75.7 15.0 -2.8 WGS 3.9 11.05 11.4
4210 +16.8 4.3 100 80 0 W/B +1.0 72.6 14.4 -1.4 WGS 3.9 10.99 11.2
4201 +17.8 4.3 100 80 0 W/B 12.2 77.6 14.7 -1.4 WGS 4.0 10.89 11.2
4183 +18.4 4.4 100 80 0 W/B 12.3 78.2 14.9 -1.5 WGS 4.0 10.89 11.2
4273 +19.2 4.4 100 90 0 W/B +1.0 80.0 14.8 -1.1 400 4.0 10.78 11.1
4354 +19.2 4.4 100 90 0 W/B +1.0 79.8 14.7 -1.3 400 4.0 10.59 11.1
4392 +19.6 4.4 100 90 0 W/B +1.0 80.0 14.6 -1.3 400 4.0 10.43 11.0
4518 +19.2 4.4 100 90 0 W/B 11.0 82.2 15.2 -1.4 400 4.0 10.26 11.0
4608 +19.0 4.4 100 90 0 W/B 12.1 83.0 16.0 -1.6 400 4.0 10.09 11.0
4598 +19.2 4.4 100 90 0 W/B 11.7 84.3 16.7 -1.6 400 4.0 9.95 11.0
4645 +19.0 4.4 100 90 0 W/B 12.2 84.2 16.9 -2.4 400 4.0 9.81 11.0
4687 +18.8 4.4 100 90 0 W/B 12.3 88.1 17.0 -2.4 400 4.0 9.81 11.0
4771 +18.6 4.4 100 90 0 W/B 12.4 86.8 17.1 -1.3 400 3.9 9.73 11.0
4873 +18.2 4.4 100 80 0 W/B 12.6 84.5 17.2 -2.7 400 4.0 9.65 11.0
4963 +17.8 4.4 100 80 0 W/B 13.1 84.0 17.3 -3.8 400 3.9 9.64 11.0
5019 +17.8 4.4 100 80 0 W/B 14.8 82.9 17.4 -3.8 400 4.0 9.67 11.0
5017 +17.6 4.5 100 80 0 W/B 14.9 86.7 17.6 -3.8 400 3.9 9.93 11.0
5027 +17.2 4.5 100 80 0 W/B 17.4 87.8 17.8 -3.5 400 4.0 10.29 11.0
5093 +17.0 4.5 100 80 0 W/B 16.9 86.7 18.3 -3.1 400 4.0 10.68 11.0
5145 +16.8 4.5 100 80 0 W/B 17.2 88.1 18.6 -3.6 400 4.0 10.68 11.0
5203 +16.6 4.5 100 80 0 W/B 18.1 87.5 18.6 -3.8 400 4.0 11.14 11.0
5309 +16.6 4.5 100 80 0 W/B 18.9 91.2 18.8 -3.5 375 4.0 11.52 11.0
5381 +16.6 4.5 100 80 0 W/B 19.2 90.3 18.9 -3.5 400 4.0 11.87 11.0
5404 +16.6 4.5 100 80 0 W/B 19.3 90.6 19.0 -1.1 400 4.1 12.49 11.0
5433 +16.4 4.5 100 80 0 W/B 19.0 95.9 19.0 +1.1 400 4.2 13.23 11.0
5498 +16.1 4.5 100 70 0 W/B 18.4 94.6 19.0 +1.1 400 4.1 13.68 11.1
5542 +15.9 4.5 93 70 0 W/B 18.4 0.0 19.0 -0.9 375 4.1 13.92 11.1
5654 +15.7 4.5 89 70 0 W/B 18.3 0.0 19.0 +0.0 375 4.2 13.92 11.1
5686 +15.7 4.5 87 70 0 W/B 18.7 98.0 19.0 -0.3 375 4.2 14.18 11.1
5667 +15.9 4.5 88 70 0 W/B 18.8 0.0 19.0 +0.7 375 4.2 14.53 11.1
5741 +15.9 4.5 89 70 0 W/B 19.3 0.0 19.0 -0.8 367 4.1 14.74 11.1
5848 +15.9 4.5 89 70 0 W/B 19.2 0.0 19.1 +1.2 262 4.1 14.65 11.1
5897 +15.7 4.5 89 70 0 W/B 19.1 0.0 19.3 +0.9 262 4.2 13.84 11.1
5919 +15.5 4.5 90 70 0 W/B 19.4 0.0 19.3 +0.9 262 4.2 12.93 11.1
5927 +15.3 4.6 90 70 0 W/B 19.4 0.0 19.5 +0.7 265 4.1 12.11 11.1
5944 +14.9 4.5 90 70 0 W/B 20.3 0.0 19.8 -0.6 265 4.1 12.11 11.1
6071 +14.9 4.5 91 70 0 W/B 20.8 99.0 19.5 -0.8 265 4.0 11.43 11.1
6128 +14.7 4.5 90 70 0 W/B 20.6 99.7 19.7 -2.6 265 4.1 10.89 11.1
6074 +14.7 4.5 84 70 0 W/B 21.6 96.0 20.0 -1.2 265 4.0 10.42 11.1
6087 +13.5 4.5 48 70 0 W/B 23.2 94.2 20.9 -0.4 255 4.0 10.17 11.1
6047 +6.4 4.5 0 30 0 W/B 23.0 71.8 ECU. -2.5 255 2.7 10.12 12.7

That’s a weird one… Maybe your knock constraints are all out of wack? That would explain why the UTEC isn’t pulling timing, but not why it wouldn’t show up in the logs… :confused:

Edit for too quick a reply

I too am running speed density and went threw a bunch of logs I have saved. I didn’t find any instances where the stock ECU timing values make that drastic of a change, a few degrees at points, but nothing that major. :confused:

Just out of curiosity, NITROS what version of ECU ROM are you running within your model year? Maybe there’s been a TSB refreshing your ECU image due to factory issues with the OE tune?

http://www.scoobypedia.co.uk/index.php/Knowledge/ECUVersionCompatibilityList

Nope not running SD.

look slike a logger issue more than anything.

do you have a tactrix cable? run some oem ecu logs.

look slike a logger issue more than anything.

Thats what I was thinking before reading the replies.

5250 -5.9 2.6 17 10 0 W/B 22.5 31.4 ECU. -4.8 ECU 3.1 11.11 13.7
5248 -1.0 3.4 40 10 0 W/B +0.9 43.7 04.2 -3.7 ECU 3.3 11.11 13.7
5252 +1.7 3.9 63 10 0 W/B 23.2 53.4 13.2 -5.0 ECU 3.6 11.08 13.7

Like with that is your UTEC really running 4*? I doubt it. An 18* drop then a 9* raise in timing would be super noticeable.

5203 +16.6 4.5 100 80 0 W/B 18.1 87.5 18.6 -3.8 400 4.0 11.14 11.0
5309 +16.6 4.5 100 80 0 W/B 18.9 91.2 18.8 -3.5 375 4.0 11.52 11.0
5381 +16.6 4.5 100 80 0 W/B 19.2 90.3 18.9 -3.5 400 4.0 11.87 11.0
5404 +16.6 4.5 100 80 0 W/B 19.3 90.6 19.0 -1.1 400 4.1 12.49 11.0
5433 +16.4 4.5 100 80 0 W/B 19.0 95.9 19.0 +1.1 400 4.2 13.23 11.0
5498 +16.1 4.5 100 70 0 W/B 18.4 94.6 19.0 +1.1 400 4.1 13.68 11.1
5542 +15.9 4.5 93 70 0 W/B 18.4 0.0 19.0 -0.9 375 4.1 13.92 11.1
5654 +15.7 4.5 89 70 0 W/B 18.3 0.0 19.0 +0.0 375 4.2 13.92 11.1
5686 +15.7 4.5 87 70 0 W/B 18.7 98.0 19.0 -0.3 375 4.2 14.18 11.1
5667 +15.9 4.5 88 70 0 W/B 18.8 0.0 19.0 +0.7 375 4.2 14.53 11.1
5741 +15.9 4.5 89 70 0 W/B 19.3 0.0 19.0 -0.8 367 4.1 14.74 11.1
5848 +15.9 4.5 89 70 0 W/B 19.2 0.0 19.1 +1.2 262 4.1 14.65 11.1
5897 +15.7 4.5 89 70 0 W/B 19.1 0.0 19.3 +0.9 262 4.2 13.84 11.1
5919 +15.5 4.5 90 70 0 W/B 19.4 0.0 19.3 +0.9 262 4.2 12.93 11.1
5927 +15.3 4.6 90 70 0 W/B 19.4 0.0 19.5 +0.7 265 4.1 12.11 11.1
5944 +14.9 4.5 90 70 0 W/B 20.3 0.0 19.8 -0.6 265 4.1 12.11 11.1
6071 +14.9 4.5 91 70 0 W/B 20.8 99.0 19.5 -0.8 265 4.0 11.43 11.1
6128 +14.7 4.5 90 70 0 W/B 20.6 99.7 19.7 -2.6 265 4.1 10.89 11.1

That also scares the crap out of me. Did you really lean out that much?

5203 +16.6 4.5 100 80 0 W/B 18.1 87.5 18.6 -3.8 400 4.0 11.14 11.0
5309 +16.6 4.5 100 80 0 W/B 18.9 91.2 18.8 -3.5 375 4.0 11.52 11.0
5381 +16.6 4.5 100 80 0 W/B 19.2 90.3 18.9 -3.5 400 4.0 11.87 11.0
5404 +16.6 4.5 100 80 0 W/B 19.3 90.6 19.0 -1.1 400 4.1 12.49 11.0
5433 +16.4 4.5 100 80 0 W/B 19.0 95.9 19.0 +1.1 400 4.2 13.23 11.0
5498 +16.1 4.5 100 70 0 W/B 18.4 94.6 19.0 +1.1 400 4.1 13.68 11.1
5542 +15.9 4.5 93 70 0 W/B 18.4 0.0 19.0 -0.9 375 4.1 13.92 11.1
5654 +15.7 4.5 89 70 0 W/B 18.3 0.0 19.0 +0.0 375 4.2 13.92 11.1
5686 +15.7 4.5 87 70 0 W/B 18.7 98.0 19.0 -0.3 375 4.2 14.18 11.1
5667 +15.9 4.5 88 70 0 W/B 18.8 0.0 19.0 +0.7 375 4.2 14.53 11.1
5741 +15.9 4.5 89 70 0 W/B 19.3 0.0 19.0 -0.8 367 4.1 14.74 11.1
5848 +15.9 4.5 89 70 0 W/B 19.2 0.0 19.1 +1.2 262 4.1 14.65 11.1
5897 +15.7 4.5 89 70 0 W/B 19.1 0.0 19.3 +0.9 262 4.2 13.84 11.1
5919 +15.5 4.5 90 70 0 W/B 19.4 0.0 19.3 +0.9 262 4.2 12.93 11.1
5927 +15.3 4.6 90 70 0 W/B 19.4 0.0 19.5 +0.7 265 4.1 12.11 11.1
5944 +14.9 4.5 90 70 0 W/B 20.3 0.0 19.8 -0.6 265 4.1 12.11 11.1
6071 +14.9 4.5 91 70 0 W/B 20.8 99.0 19.5 -0.8 265 4.0 11.43 11.1
6128 +14.7 4.5 90 70 0 W/B 20.6 99.7 19.7 -2.6 265 4.1 10.89 11.1

That also scares the crap out of me. Did you really lean out that much?


Yea i know. Fixed that. too much boost not enough fuel there. Injectors went static. :(

Well it has me a bit curious because in a span of 200 RPM you went from 14.X to 12.X as rpms increased but the injector duty cycle remained the same which means a shorter injector pulse. Less fuel, more air...richer AFR? I'm wondering if your fuel pump duty was pulled back a lot by the stock ECU for some reason. Something else was going on there IMHO.

I agree the first log posted looks more like a logger screw up than anything. There is nothing particularly special about 1 degree timing to the ECU. The fact that you see it exactly 1.0 several times like that out of the blue doesn't make sense. I wonder if the UTEC logger has trouble determining ECU timing when it is very low. ??

I agree the first log posted looks more like a logger screw up than anything. There is nothing particularly special about 1 degree timing to the ECU. The fact that you see it exactly 1.0 several times like that out of the blue doesn't make sense. I wonder if the UTEC logger has trouble determining ECU timing when it is very low. ??

though i've never seen it as low as 1 degree, i have seen it down in the single digits... 8s and 9s.

What logger is this?

This is logger 1 with target afr appended at the end.

Sorry I should have been more specific. What program did you use to capture the log from the UTEC? If you are using a 3rd party program besides a terminal emulator (HyperTerm ect) can you try again with just the terminal emulator?

looks like UTI.