Cobb Stage 2+ sport logs

[bmw335iguy]

Okay I just loaded up the stage 2+ sport maps and have been doing some logs to see how everything's running. Car is noticeably faster than stage 1 aggressive. I was topping off with 5 gals of e85 with CA's 91 shell v-power, haven't tried it with stage 2+ aggressive...yet. At 4000 rpms the boost comes in strong and the car takes off. Is that normal for stage 2+, its not like the car is slow before 4k rpms, but you can really feel the boost increase right around then.

Whats bothering me is in almost all my logs i'm getting timing corrections in multiple cylinders, and boost isn't consistent from run to run. Sometimes it will only hit 14-15 psi sustainted and others times it will hit 17 and hold 16 psi for some time. I'm not sure if that correlates with my iats climbing in the last logs, causing the tune to add more boost. What would casue the timing corrections? not enough octane, old coil packs?

Mods are ar dp's, ets 7" fmic, dci. Car has 49K miles. AT tranny

spark plugs were changed by bmw less then 8k miles ago. I have the 933 model # hpfp that was changed in sept. of 2010, not sure what software im on. And i've had 4 of the 6 injectors replaced.

appreciate any input!