Just finished hooking up and recording my first run. I'm new to this, but does this look a little lean? I have a SCT chip installed, but I also have a predator that I have never used. What would be the best way to make adjustments with the predator? Thanks guys.

Time MAF TPS RPM AFR W R
0.000 1.20 1.37 1432 14.7 0 0
0.110 1.20 1.39 1436 14.7 0 0
0.219 1.20 1.37 1442 14.7 0 0
0.328 1.18 1.35 1452 14.7 0 0
0.438 2.65 2.76 1477 14.8 0 0
0.781 2.65 3.10 1565 14.8 0 0
0.875 2.82 3.22 1630 14.8 0 0
0.985 3.51 3.39 1913 14.9 0 0
1.094 4.22 3.55 2189 14.7 0 0
1.203 4.43 3.63 2404 14.5 0 0
1.313 4.57 3.78 2675 14.3 0 0
1.422 4.55 3.88 2921 14.1 0 0
1.531 4.55 4.02 3150 13.7 0 0
1.641 4.55 4.10 3370 13.5 0 0
1.750 4.53 4.20 3653 13.3 0 0
1.860 4.55 4.27 3905 13.0 0 0
1.969 4.55 4.37 4079 13.0 0 0
2.078 4.53 4.45 4309 13.0 0 0
2.188 4.55 4.53 4574 13.0 0 0
2.297 4.55 4.55 4746 13.0 0 0
2.406 4.55 4.63 4920 13.0 0 0
2.516 4.57 4.55 4966 12.9 0 0
2.625 4.55 4.35 4713 12.9 0 0
2.735 4.55 4.31 4326 12.8 0 0
2.844 4.55 4.29 4141 12.7 0 0
2.953 4.53 4.22 4075 12.6 0 0
3.063 4.53 4.16 3931 12.5 0 0
3.172 4.53 4.10 3799 12.4 0 0
3.281 4.53 3.98 3663 12.3 0 0
3.391 4.53 3.90 3502 12.2 0 0
3.500 4.53 3.90 3361 12.1 0 0
3.610 4.55 3.96 3299 12.1 0 0
3.719 4.57 4.00 3339 12.1 0 0
3.828 4.55 4.02 3391 12.2 0 0
3.938 4.53 4.04 3441 12.2 0 0
4.047 4.53 4.06 3490 12.3 0 0
4.156 4.53 4.10 3539 12.4 0 0
4.266 4.55 4.10 3601 12.4 0 0
4.375 4.53 4.10 3652 12.5 0 0
4.485 4.55 4.18 3699 12.5 0 0
4.594 4.57 4.20 3759 12.5 0 0
4.703 4.57 4.20 3803 12.6 0 0
4.813 4.57 4.25 3865 12.6 0 0
4.922 4.57 4.25 3928 12.6 0 0
5.031 4.57 4.27 3974 12.6 0 0
5.141 4.57 4.31 4031 12.6 0 0
5.250 4.55 4.31 4089 12.6 0 0
5.360 4.57 4.33 4131 12.6 0 0
5.469 4.55 4.33 4166 12.6 0 0
5.578 4.57 4.37 4177 12.6 0 0
5.688 4.57 4.37 4195 12.6 0 0
5.797 4.57 4.39 4222 12.6 0 0
5.906 4.57 4.37 4257 12.5 0 0
6.016 4.57 4.43 4311 12.5 0 0
6.125 4.57 4.45 4370 12.5 0 0
6.235 4.57 4.47 4426 12.5 0 0
6.344 4.57 4.49 4481 12.5 0 0
6.453 4.55 4.49 4536 12.5 0 0
6.563 4.55 4.51 4595 12.5 0 0
6.672 4.55 4.53 4642 12.5 0 0
6.781 4.55 4.55 4699 12.4 0 0
6.891 4.57 4.57 4753 12.4 0 0
7.000 4.57 4.59 4822 12.3 0 0
7.110 4.55 4.59 4865 12.2 0 0
7.219 4.55 4.57 4918 12.2 0 0
7.328 4.59 4.65 4965 12.1 0 0
7.438 4.57 4.63 5024 12.2 0 0
7.547 4.57 4.65 5065 12.2 0 0
7.656 4.57 4.65 5115 12.2 0 0
7.766 4.55 4.65 5186 12.2 0 0
7.875 4.55 4.65 5242 12.2 0 0

 

Seems a bit lean to me.

 

Yep lean...Your maf counts do not rise with your rpms....weird... Also was that an all gear data log? You need to get your converter locked and start the log from there...

 

yea seem to be about a half a point lean. go on the highway about 50ish mph hit the OD off button start to datalog it then nail it

Will

 

Thanks guys, that run was full throttle from about 10 mph up to about 90. I will try and make another run today if I can find enough clear highway to do a 3rd gear run. But I'm still wondering about how to make adjustments with the predator/SCT combo. It seems to me that the SCT and the predator both work in the same way in that they add to or subtract from baseline settings. Would it be possibe for me to pull the SCT chip, connect the predator to "marry" the truck, then create a custom tune with the predator that only adds some fuel and then reinstall the SCT chip? It seems to me the SCT tune would then be richened up by the amount set in the predator tune. Does this sound right?

 

Rained most of the day here, did not get a chance to make another run. Any opinions on the predator/SCT working together?

 

im not sure if anyone has stacked a lightning like that but i have stacked my duramax diesel with a edge and predator talk about some serious black smoke and power

 

Yes, I would really like to get some opinions on this before I move on it. I think it would work the way I described it above, but I just want to be sure. Would be nice to talk to someone that has done it before.

 

It looks like you have your TPS & MAF_V backwards. Its easy to fix by swaping the analog input labels. Also you should adjust your TPS to read between 0-100. I think you have to use the TPS setting on the commander software.

 

Thanks Sharpshooter, I see that now. I can make the changes in the software easy enough. I sent my results to James @ RWTD to see what he thinks about the numbers and maybe get a tune. Hopefully he can answer my question about the SCT/Predator working in conjunction with each other. Probably won't hear from him for a few days though, he is still recovering from Katrina.

 

seems lean to me too. FWIW i made a post about the stock AFR and the AFR on a stock tune with a 2lb pulley, the AFR starts at 12:1 and drops quickly to 10:1 or so.

http://www.nloc.net/forum/showthread...hreadid=104521