Pro Mouse

iTrader: (15)

I logged 2 runs tonight about 15 min apart.Coolant Temps for both runs were 180-190 range,Outside Temp about 77 degrees.Please Help me understand why my 2nd A Tap run is got KR?I mean it was so bad I felt the detination around the Bell Housing area,it was almost like it was Bucking (missing)really bad.What could cause this,Could it be Poor Fuel?My Tuner has a max of 4 degrees to pull out and it used it all
Engine Speed,LTerm Fuel Trim B1,LTerm Fuel Trim B2,O2 Sensor - B1S1,O2 Sensor - B2S1,Ignition Timing Adv,Knock Retard,Intake Air Temp
1285,-0.8, 0.0,0.810,0.890,37.5,0.0, 100
2085,-1.6,-4.7,0.050,0.385,34.5,0.0, 100
2977,-5.5,-3.9,0.085,0.790,26.5,0.0, 100
3810, 0.0, 0.0,0.870,0.905,27.0,0.0, 100
4747, 0.0, 0.0,0.905,0.910,27.0,0.0, 100
5598, 0.0, 0.0,0.910,0.905,26.5,0.0, 100
6230, 0.0, 0.0,0.900,0.925,28.5,0.0, 100
6486, 0.0, 0.0,0.830,0.905,8.5,0.0, 99
5249, 0.0, 0.0,0.915,0.925,26.5,0.0, 97
5426, 0.0, 0.0,0.910,0.915,27.0,0.0, 95
5650, 0.0, 0.0,0.910,0.925,27.0,0.0, 93
5843, 0.0, 0.0,0.905,0.915,27.0,0.0, 93
6051, 0.0, 0.0,0.905,0.925,28.0,0.0, 91
6312, 0.0, 0.0,0.895,0.925,28.5,0.0, 90
6503, 0.0, 0.0,0.915,0.925,8.0,0.0, 90
5233, 0.0, 0.0,0.905,0.920,27.0,0.0, 88
5277, 0.0, 0.0,0.950,0.965,38.5,0.0, 86
3737,-3.9,-6.2,0.025,0.030,10.5,0.0, 86
3388,-3.9,-6.2,0.920,0.925,37.5,0.0, 86
3124,-3.9,-6.2,0.090,0.085,
Run number 2
Engine Speed,LTerm Fuel Trim B1,LTerm Fuel Trim B2,O2 Sensor - B1S1,O2 Sensor - B2S1,Ignition Timing Adv,Knock Retard,Intake Air Temp
1566,-4.7,-4.7,0.800,0.870,33.5,0.0, 91
2220,-2.3,-3.9,0.040,0.045,32.5,0.0, 91
3127, 0.0, 0.0,0.130,0.090,28.0,3.9, 91
4420, 0.0, 0.0,0.870,0.900,24.0,3.5, 91
5358, 0.0, 0.0,0.875,0.910,24.0,3.3, 93
5798, 0.0, 0.0,0.875,0.910,25.0,3.0, 93
6672, 0.0, 0.0,0.890,0.705,26.0,2.7, 91
5137, 0.0, 0.0,0.915,0.930,24.5,2.5, 91
5368, 0.0, 0.0,0.910,0.920,24.5,2.2, 90
5583, 0.0, 0.0,0.905,0.915,25.0,2.0, 88
5796, 0.0, 0.0,0.905,0.905,25.0,1.8, 86
6024, 0.0, 0.0,0.905,0.910,26.0,1.7, 86
6264, 0.0, 0.0,0.895,0.910,27.0,1.5, 84
6486, 0.0, 0.0,0.915,0.915,27.0,1.3, 84
6314, 0.0, 0.0,0.895,0.930,25.5,1.1, 82
4308,-1.6,-2.3,0.885,0.910,8.0,0.0, 82
3650,-2.3,-2.3,0.010,0.020,8.0,0.0, 82
3533,-2.3,-2.3,0.000,0.000,7.0,0.0, 81
3090,-0.8,-1.6,
But yet on my 2nd run my IAT was cooler go figure,I dont get it my first run is always ok ,its the 2nd and 3rd that look bad.Please Help
Scott

Another_User

That is tip-in knock. If I am reading those jumbled numbers right, you had a lean hole right before that knock happened.

Pro Mouse

iTrader: (15)

Tip-in knock,huh?How could you tell that?I am missing something.My numbers are jumbled and my auto tap doesnt log like it used to,I use to get more data on a run.But what am I missing?So I guess if I take my MAF Translator and richen it up for WOT only,I should see the KR disappear?Thanks for the Help Another_User

jimmyblue

iTrader: (11)

Same thing I thought - the O2 dip to 0.05 / 0.04
means the thing was dead lean for an instant.
What baffles me is why there was no KR on the first
pull.

Your ATAP has a limited PIDs x rate capability. More
PIDs after a point will slow it down. Need to check
the docs on that. I know on my EFILive and HPTuners
you can get 10x24 but I believe ATAP was less rate?

Fattening up the VE in the 2000-3000 range would
probably help cover the "hole". There is no explicit
"pump shot" feature. But if you're only tuning with
a MAFT then your options are few. Plus, the MAFT
has to be making the already-slow MAF even a bit
slower.

To ease this you might want to roll the throttle on
slower, minimize the MAP delta per tick and let the
MAF have a better chance to stay with the airflow.
Snap the throttle open and you're on the speed
density tune until the PCM expects the MAF to be
back on plane.

'Course, the faster you go, the less data you get

cablebandit

iTrader: (37)

sure the exhaust isn't hitting? I have never FELT knock retard...I mean I have felt it slow the car but not actually felt it KNOCK. How bout the tranny mount...is it ok?

Pro Mouse

iTrader: (15)

Well ,I do have a little banging going on but my tuner tuned it out, why no KR on first run?I mean to tell you the Car was Bucking,Thats what I was feeling.Jimmyblue I can try to fatten up the VE,How much should I add in the 2000-3000 range?I have HP tuner ,I am just going to try 2-4% rich @ wot with my MAFT just to see what it does....Thanks...