I finally solved part of my can't breathe problem
I started SB diet in Sept. the first 2 weeks you cut out all carbs then introduce them back in slowly.
during this time my breathing got better. Then I read on The celiac thread where someone posted about wheat bothering her asthma so 2+2 = don't eat wheat.
I stayed off all grains again for 2 weeks then slowly introduced some in again.
Oatmeal is a definate immediate reaction. Wheat I can tolerate in small amts. It seems white flour is better than whole grain 
My HR is off the charts too (always around 170 when doing any exertion although I can still talk in short sentances) I hope it goes down soon
I was blowing 360 -390 now I can get 410 pretty regularly and one day even hit 440! Yippeee ! ! ! !
BTW I am on Advair and singulair too.
another side benefit of not eating grains is my muscles don't ache like they used to and I sleep better.
It's about the journey and being in the moment, not about the destination