I don't know why people are so insistent on believing *theories* they read on the internet. I suggest people put it into effect themselves before blindly saying 2.5" is too big. I did, then a few years later necked it down to 2.25" and
LOST low end response and power. I put a theory to the test before believing it and found it to be wrong, which is what my brother had been suggesting to be true before, and it wouldn't have bothered me to prove him wrong either. He's just too damn smart for his own good sometimes
The thing is, no matter what setup you're running, it just won't work to it's full potential unless each piece is tuned to work together. Each mod I've made to my truck has been put to the test of pulling a steep hill on the freeway going to work, which really helped me keep track of each change I made to my truck.
On the right in the last pic, have you capped that emissions tube off? I'm sure that'll mess with you if left open. And if it helps, that looks like a NWOR header, which is a pretty nice design, though I think thorleys are a little better tri-y.
