bebout

I have read different solutions and have tried a few. I have a 2004 6speed. I noticed I was losing power in 6th on interstate. Then noticed power loss going up hills and had to shift down where I haven't before. This happened for a few days then the car just quit on me. After sitting about 30 minutes it started and ran until I had to turn and go up large hill and it stalled again. Let it sit a couple of hours and it started and pulled hill to house. Started fine this morning so pulled it in garage and removed CAT and gutted it. Also cleaned MAF. Car now wont start or even fire. DSC light is flashing continuously along with security light. Tried removing the battery cable and pump brakes to reset to no avail. Are there any answers to look at next before having towed?