Hey,

So I usually log my AFR anytime I'm going WOT with evoscan.. and I have had my AFR dialed in pretty tightly at 11.1-11.2 from 4000RPM up til 7000RPM or so..

Recently the AFR has been getting more rich, and I've modified it to compensate for it. Now its done it again! I'm afraid of making the fuel maps perfect and all of a sudden it goes the wrong direction, and gets super lean on me..

Any idea why its doing this?

 

There is the current fuel map..

And here is the last log I did 3rd-4th


TPS RPM WBO2 LOAD
100 2969 18.89 118
100 3156 13.11 132
100 3094 12.00 146
100 3094 11.83 160
100 3219 11.88 175
100 3344 11.70 199
100 3375 11.57 233
100 3438 11.36 262
100 3563 11.25 289
100 3688 10.73 256
100 3781 10.89 249
100 3875 11.03 252
100 4000 11.07 264
100 4125 10.89 262
100 4250 10.85 262
100 4313 10.89 262
100 4438 11.01 267
100 4563 10.91 267
100 4688 10.91 262
100 4813 10.92 256
100 4875 10.92 253
100 5000 10.88 251
100 5125 10.97 251
100 5250 10.97 252
100 5313 11.04 255
100 5469 10.95 255
100 5563 11.04 252
100 5656 10.91 251
100 5781 10.85 248
100 5875 10.78 244
100 5969 10.82 241
100 6063 10.78 241
100 6156 10.78 238
100 6250 10.98 222
100 6375 11.25 220
100 6469 11.17 219
100 6563 11.04 218
100 6656 11.14 217
100 6750 11.25 217
100 6844 11.29 214
100 6938 11.27 200
100 7031 11.00 210
100 7125 10.72 212
100 7188 10.79 205
100 7281 10.89 205
100 7375 10.73 203
100 7469 10.75 202
100 7563 10.82 200
100 7594 10.83 200
97.25 7688 10.85 54
14.11 7344 11.73 1
13.72 7125 12.20 11
69.41 6906 12.48 117
100 5688 13.29 176
100 6094 11.05 238
100 6063 9.80 246
100 6063 10.50 238
100 6094 10.55 244
100 6094 10.39 235
100 6156 10.32 234
100 6188 10.26 233
100 6219 10.05 219
100 6281 10.60 218
100 6344 10.58 218
100 6406 10.42 217
100 6438 10.48 219
100 6469 10.33 218
100 6500 10.38 218
100 6594 10.33 216
100 6625 10.47 215
100 6656 10.44 215
100 6719 10.45 214
100 6781 10.53 216
100 6813 10.53 213

 

Are you getting any knock?

 

On that log -3rd gear

1 count 3875,4000rpm (2 tenths)
1 count 4688 (1 tenth of a sec)

Total of 3 lines..

4th had 0 all the way

 

damn dude that's a lot of fuel..

 

Here is my air fuel map.

My airfuel drops is 11.5 in peak torque dropping to about 11.1 at 4000 and then high 10's like 10.6 - 10.9 to redline

I try to keep the transitions smooth rather than jump around all over in the boost portion.



On a side note dam you hit 289 load, how much are you boosting?

 

Yeah, for some reason your map and your WB dont seem to agree. Your fuel map is richer than stock, yet the WB is reading well leaner. Strange things are afoot at the Circle K.

 

Sexy fuel map :O

 

I notice about a 1.4 point difference from desired A/F to actual WB reading. I am curious what WB's you are using to base your maps on. I'll go first:

Originally a LM-1 (proved untrustworthy, was showing a 2.0 point difference)

Now a PLX

 

Innovative LC1 ... :-\

 

I use an LM1 mine is pretty accurate, had an FJO also gave me same readings with ntk sensor.

It is kind of hard to keep the airfuel consistent it will fluctuate a bit, there is no smooth function, there is only vertical interpolation and horizontal interpolation unless I looked over something, I still need work on my airfuel somewhat, I am trying to work it up to 11.1 all the way to redline and still keep a smooth fuel map.

 

I should add it was a 2.0 difference from the target map to the LM1, but a dyno WB (not sure what brand it was a sniffer) and a PLX both were showing only a 1.4 difference. My fuel is pretty linear, it extrapolates values pretty well but of course it jumps at times.