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Discussion Starter #1
Alright I think I got my AFC tuned pretty well. I want to make the most out of my 264 cams and supporting mods. What do you guys think? Throttle is 100%

RPM Timing O2 1 Bank 1
3688 2 0.94
3883 4 0.92
4074 5 0.92
4238 7 0.92
4434 7 0.92
4605 7 0.92
4770 8 0.92
4930 8 0.92
5105 9 0.92
5285 9 0.94
5445 9 0.92
5625 10 0.92
5777 11 0.94
5949 12 0.92
6109 13 0.92
6266 15 0.92
6414 15 0.92
6563 15 0.92
6738 17 0.94
6836 18 0.94
6969 19 0.94
 

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Looks good to me, but you need to take it on up to 7600 to make sure that part of the tune is proper, especially since you have cams. I go all the way to the rev limiter when tuning, and I don't even have cams. You're probably fine, but you would want to make sure.

The timing advances nicely, and you have a built-in safety margin of richness at the top end, which is something I usually do, too.
 

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Yea, your practically there. :thumb:
Maybe take out 1-2% where it's .94v to get the voltage .92 across. Just keep an eye on the timing, make sure there's no knock, and your set.
Let me guess; this is not 91 oct gas huh? :D
 

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Discussion Starter #4
Yea 93 octane over here lol. But I did a log this morning and got consistent 0.90v across the board from 3.5k - 7k. It was like 90 some outside though. The timing was still advancing nicely though... so doesnt seem to be knocking or anything. Should I adjust to get 0.92, 0.93 in this weather or leave my settings. Thanks.
 

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fuzzychi said:
Yea 93 octane over here lol. But I did a log this morning and got consistent 0.90v across the board from 3.5k - 7k. It was like 90 some outside though. The timing was still advancing nicely though... so doesnt seem to be knocking or anything. Should I adjust to get 0.92, 0.93 in this weather or leave my settings. Thanks.
I know O2 voltage will go down if the sensor is heated up. Tune at night when it's cooler and let things cool down between runs. You'll get more consistant voltage.
.93v is perfectly fine on the 93 oct. My timing is getting pulled just a little, but I only have 91 octane. :barf: It's really warm right now in CA too so I guess I'll lower the boost, mix in some 100 oct., or just run richer.
You could probably get away with .92v too. Shoot for it, watch the timing, and let us know.
 

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Discussion Starter #6
Alright thanks for all the information, I'll keep you up to date when I do some more tuning.

turbolarry said:
I know O2 voltage will go down if the sensor is heated up. Tune at night when it's cooler and let things cool down between runs. You'll get more consistant voltage.
.93v is perfectly fine on the 93 oct. My timing is getting pulled just a little, but I only have 91 octane. :barf: It's really warm right now in CA too so I guess I'll lower the boost, mix in some 100 oct., or just run richer.
You could probably get away with .92v too. Shoot for it, watch the timing, and let us know.
 
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