F53 (2004) Test, Interesting.

I have an 03 F-53 chassis and it had some hill issues, big time. After the first time out, I found the complete Banks kit, with the ECU chip for $1700 and installed it myself. Didn't check fuel milage, as I really don't care, I care about power. And man, does it ever have power. I have a 24' enclosed trailer for my sand car, and I haven't pulled it yet, but will this weekend. I understand what you've done, but if you have the funds to it, I highly reccommend the Bank's kit. Barely hear it inside, you hear more of that big air intake that comes with the kit than anything. I give it 4 thumbs up. It pulls like the hulk, in comparison to before.