Title pretty much sums up the issue. If I'm cruising up a slight incline around 2000 rpms the afr drops to 10. Also does it at 3000 ish rpms in 5th gear, (or lower except the aem doesn't display below that.) Im finding a trend here, but I cannot identify how or what it is.

Vacuum is usually at 0 +- .x . I don't have a lap top and I'm trying to get to a tune shop, but they are quite a distance. STM is nearly 180 miles.

Perrin intake, mild hks cams, buschur dp, hallman mbc, stock turbo, manifolds pretty basic setup. Been tuned at slowmotion motorsports before I bought it .. not sure how long though . Runs 23 ish down to 21 at wot .

Does this seen like common problem? . I've read about it but searching was futile