Banks Long Tube Headers and Ford V-10 Performance

My previous coach was a 400/1200 ISL at 32K. I chipped it to 450HP and it was a rocket, even when towing. The new coach is a 450/1250 ISL weighing in at 37K and is a dog on the hills. It's taller, heavier and dragging a tag axle.

I don't have a huge issue with smog equipment, especially since they're returning the HP back to the autos. The only problem is how complicated they get if you have an issue. I can eat off the tailipe of my diesel running DEF.