MAF/ AFR tuning woes?

[99socalfrc]

I have HP tuners, let me lay out the way I usually tune,
1. I dial in the VE using the SD mode, log and paste error, I get it within +/- 3
2. then I set the PE to my desired AFR.
3. From there I plug in the wide band and rescale the MAF as needed to get the desired AFR, usually it takes no more than 5-7% change on the MAF.

Here's the problem, my 05 GTO with a 224/228 cam isn't taking to this method very good, the MAF adjustments seemed to have no effect on AFR, or it just takes so much of a swing to change the AFR, example 15%. I cannot get the AFR below mid 13's without adjusting my PE table and it bugs me, any ideas?

[Spectre]

Did you change injectors or anything besides the cam?

[99socalfrc]

No other changes, after some more research it seems I do need to stick with the MAF adjustments to fix it, I will have to figure my % error manually as I don't have the pro version, what kind of % should I be ok with changing the MAF curve? I guess my concern is I've never had to change it more than 5-7%, so how much can I change it before I should be uncorfortable about it?

[Bill@HPTuners]

Maf controls 100% of fueling over 3600 with the stock tune, so anything over that the maf pretty much takes over, its much easier to make adjustments via copy & paste rather than by eye.

[redgto4u]

so what is controlling fuel below 3600? part throttle and wot?

Isit both ve and maf tables?

[Bill@HPTuners]

Its a mixture of maf & ve below 3600.

[99socalfrc]

So if my VE table is not really dialed in above 3600 will not affect my WOT AFR? When I dialed in the VE I really just did idle/ cruise conditions.