To retard = to subtract timing from whatever you have. In this case, if you have -1 now, just add (-0.3) to it:
(-1 + (-0,3)) = -1.3

 

I graphed a bit of that data for you.. From a visual perspective, its obvious your timing is what is causing the detonation..

EDIT: It looks like the timing was effected in response to the detonation..

See if this makes sense to you...

 

I found one point, right where you are getting your detonation where there was -1 or so in your timing (I'm assuming its in degrees) Not sure if it was pulling timing, or a factor of the map..

You can see exactly where you hit fuel cut (The abrupt dropoff of the Injector duty cycle) and you can see how the AFR is slightly lean compared to the early portion of the graph..

I tried graphing it with a few more bits of data, but it was virtually unintelligable.. If you had the MAP Sensor installed, I would be willing to bet that 3100rpm is where your boost spiked..

 

Your definitely going to have to play with the timing a little in that region..

 

bj, the timing i got figured, does the fuel work like you stated??

 

Malibujack, i took out 1 degree of timing like TXS said and it appears in the second log that the knock went away. I need to know where to put the second knock sensor so that i can use the head phones.... RRR

 

going from -1 to -1.3 fuel would mean a lower MAF reading.. Therefore leaner (Are these values in Percent??)

Oh and I realized the graph has an error.. I plotted the unmodified values, not the modified values..

 

Find a location close to the stock knock sensor if you can.. Ya know, I wonder if you can wire into the stock knock sensor so you can hear what the ECU hears, in theory that could work, in practice that might affect the signal that gets to the ECU

 

do you know where the stock knock sensor is???

 

Hmm.. you got me.. I'm not sure but I can look for it tomorrow..

 

thank god for aol instant messenger

 

The values in the fuel map are a % of MAF frequency.
Try adding another .5 in the fuel map to the two log sections below.

Now add -.3 to the fuel map for this section to lean it out.

The fuel map ctrl-u command lets you add to the fuel map. If you wish to go leaner hit ctrl-u and enter a negative number. -1 + -1 = -2.

If you want to add fuel into the map add a positive number -1 + .5 = -.5

These values are a % of MAF frequency.

-Nathan
www.turboxs.com

 

here is my second round of tuning. I can tell i lost a bit of pull on the butt dyno with this one.....tell me what you think??!!!



, , , ,Load,Knock, , , Mod, Mod, , Mod, WB
RPM, MAP, MAF,TPS,Site,Count, Ign#1, Inj#1, Ign, Fuel,Boost, MAF, AFR
, psia, Hz, % , , , deg , duty , deg, % ,(OL) , Hz,
845,+27.4, 30, 0, 00, 00, +4.3, 1.0,ECU. , +0.0,ECU. , 30, 14.37
845,+27.4, 30, 0, 00, 00, +4.3, 1.0,ECU. , +0.0,ECU. , 30, 14.33
842,+27.4, 31, 0, 00, 00, +5.1, 1.0,ECU. , +0.0,ECU. , 30, 14.33
846,+27.4, 31, 0, 00, 00, +5.1, 1.0,ECU. , +0.0,ECU. , 30, 14.45
850,+27.4, 29, 0, 00, 00, +4.2, 1.0,ECU. , +0.0,ECU. , 31, 14.65
859,+27.4, 32, 0, 00, 00, +3.2, 1.0,ECU. , +0.0,ECU. , 32, 14.74
871,+27.6, 32, 0, 00, 00, +2.1, 1.0,ECU. , +0.0,ECU. , 30, 14.74
2768,+27.4, 555,100, 10, 00, +16.5, 15.0, +9.0, +0.0,100.00, 372, 13.33
2794,+27.4, 411,100, 10, 00, +16.4, 16.0, +9.0, +0.0,100.00, 539, 13.33
2839,+27.4, 553,100, 10, 00, +13.6, 18.0, +9.0, +0.0,100.00, 491, 13.09
2918,+27.4, 499,100, 10, 00, +11.6, 19.0, +9.0, +0.0,100.00, 664, 12.83
2978,+27.4, 759,100, 10, 00, +9.4, 22.0, +9.0, +0.2,100.00, 663, 12.59
3075,+27.2, 737,100, 10, 00, +6.7, 26.0, +9.0, +0.0,100.00, 853, 12.46
3159,+27.4,1002,100, 10, 00, +5.7, 31.0, +9.0, +0.1,100.00,1000, 12.33
3280,+27.4, 899,100, 20, 00, +4.3, 36.0, +9.0, +0.3,100.00, 909, 12.11
3380,+27.4, 904,100, 30, 00, +3.8, 41.0, +8.5, +0.3,100.00, 764, 12.02
3508,+27.2,1020,100, 40, 00, +2.7, 46.0, +8.0, -0.2,100.00, 819, 11.93
3631,+27.2,1470,100, 40, 00, +2.9, 50.0, +7.5, -0.2,100.00, 708, 11.84
3775,+27.2,1416,100, 40, 00, +2.9, 51.0, +7.2, -0.2,100.00,1196, 11.81
3894,+27.2, 994,100, 40, 00, +4.1, 53.0, +7.6, -0.4,100.00,1515, 11.81
4065,+27.4,1428,100, 40, 00, +4.0, 56.0, +8.0, -0.5,100.00,1086, 11.71
4187,+27.4,1054,100, 50, 00, +3.3, 57.0, +7.0, -0.5,100.00,1329, 11.53
4334,+27.4,1381,100, 60, 00, +4.0, 57.0, +7.2, -0.9,100.00,1282, 11.43
4420,+27.4,1474,100, 60, 00, +3.9, 59.0, +7.6, -2.3,100.00,1461, 11.45
4553,+27.4,1582,100, 70, 00, +3.8, 60.0, +8.0, -2.8,100.00,1396, 11.45
4708,+27.4,1440,100, 70, 00, +5.5, 62.0, +8.0, -3.4,100.00,1282, 11.45
4844,+27.2,1519,100, 70, 00, +5.6, 64.0, +8.6, -4.7,100.00,1488, 11.45
4952,+27.4,1538,100, 70, 00, +7.8, 65.0, +9.8, -6.2,100.00,1412, 11.49
5096,+27.4,1282,100, 80, 00, +7.8, 65.0, +9.0, -6.5,100.00,1524, 11.45
5192,+27.2,1597,100, 80, 00, +7.9, 67.0, +9.0, -6.8,100.00,1388, 11.43
5316,+27.0,1633,100, 90, 00, +6.8, 69.0, +9.3, -7.6,100.00,1453, 11.49
5455,+27.0,1492,100, 90, 00, +8.4, 70.0, +9.8, -8.6,100.00,1470, 11.48
5592,+27.0,1661,100, 90, 00, +8.7, 71.0,+10.0, -9.1,100.00,1396, 11.45
5659,+27.2,1672,100, 90, 00, +9.1, 73.0,+10.0, -9.5,100.00,1515, 11.53
5777,+27.4,1742,100, 90, 00, +11.2, 74.0,+10.2,-10.0,100.00,1623, 11.58
5899,+27.4,1655,100,100, 00, +11.4, 75.0,+10.6, -9.1,100.00,1773, 11.48
6006,+27.4,1858,100,100, 00, +12.2, 77.0,+11.0, -9.5,100.00,1524, 11.42
6071,+27.2,1805,100,100, 00, +13.4, 79.0,+11.3, -9.6,100.00,1655, 11.34
6207,+27.2,1901,100,100, 00, +14.4, 81.0,+11.8, -9.9,100.00,1748, 11.23
6301,+27.2,1824,100,100, 00, +14.4, 80.0,+12.6,-10.0,100.00,1666, 11.14
6410,+27.4,2057,100,100, 00, +15.5, 83.0,+13.2,-10.0,100.00,1736, 11.11
6510,+27.4,1968,100,100, 00, +17.3, 81.0,+14.0,-10.0,100.00,1633, 11.11
6613,+27.2,1865,100,100, 00, +18.4, 83.0,+14.4,-10.4,100.00,1562, 11.14
6706,+27.2,2032,100,100, 00, +18.4, 84.0,+14.8,-10.8,100.00,1736, 11.11
6802,+27.2,1838,100,100, 00, +19.5, 84.0,+15.4,-11.0,100.00,1689, 11.08
6887,+27.2,1960,100,100, 00, +19.6, 85.0,+16.0,-11.0,100.00,1838, 11.08
6944,+27.2,1937,100,100, 00, +21.8, 86.0,+16.6,-11.0,100.00,1760, 11.02
7047,+27.2,1908,100,100, 00, +21.9, 88.0,+17.1,-11.0,100.00,1748, 11.01
7122,+27.4,1915,100,100, 00, +21.7, 88.0,+17.5,-11.0,100.00,1689, 10.96
7215,+27.4,1923,100,100, 00, +22.5, 89.0,+17.8,-11.0,100.00,1773, 10.95
7278,+27.4,1984,100,100, 00, +22.5, 90.0,+18.0,-11.0,100.00,1760, 10.96
7390,+27.4,1984,100,100, 00, +22.6, 89.0,+18.0,-11.0,100.00,1785, 10.96
7440,+27.4,2016,100,100, 00, +22.3, 90.0,+18.0,-11.0,100.00,1824, 10.96
7541,+27.2,1865,100,100, 00, +22.2, 90.0,+18.0,-11.0,100.00,1748, 10.93
7575,+27.2,1953,100,100, 00, +23.3, 89.0,+18.0,-11.0,100.00,1736, 10.90
7645,+27.2,1992,100,100, 00, +23.7, 87.0,+18.0,-11.0,100.00,1773, 10.90

 

Guys at TXS, your incredible!!! Thanks for all the help....
ill try to work on the top end this week. Do i only adjust the load sites on the 100% column?? or 80-100 or how do i know???? RRR

 

Hey Ray,

try posting the log like this It's easier to read that way.

Jermaine~
www.turboxs.com