Anyone have any ballpark rpm range settings for a stock m7? I believe the 4-5000 rpm range need some fine tuning for sure. Any other areas that need tweaking?

What year sled and any modifications. Mainly you need to take some off the top two settings. The mid is pretty spot on for a stock sled and the low rpms really depends what year and what you have done to it and just your individual sled and its TPS setting.

06 m7 le 162
sno pro airbox inlet
thats it
it seems to bog in the 4500 range then it pulls hard.

Two things...

Check the belt/sheave clearance on the primary.

and

With the sno-pro airbox you'll want to add a bit of fuel on the lower two RPM settings and maybe a tad at the higher settings until you can determine how rich the sled is (just to be safe mostly).