Banks doesn't get a lot of good reports because it's over priced and low on performance. The IQ is pretty slick, but can't be used stand alone.
There are lots better ways to spend your money and get the same or better performance. The Big Hoss says it put down 334/751 for upwards of $3,000. A Smarty Jr can do more for $495, without added rail pressure (that's good!), or airflow mods.
The stock intake supports at least 450 rwhp with a few cheap mods, there is no reason to replace it on a towing rig.
The stock exhaust can easily support 600 rwhp, again no reason to replace it.
The stock intercooler is pretty efficient. In 100% stock trim I only ever saw about +40° over ambient on my IATs, and two different testers showed that a 1° drop/rise in IAT equated to about 1. 5°s of EGT drop/rise so I am not sure the intercooler is worth it (unless you have a plastic one now).
Your transmission will also not handle the full power of the Big Hoss without some upgrades.
Personally I have found the OEM turbo to only cool about 350 rwhp when towing at elevations above 4K feet, so again the full power of the Big Hoss can't be utilized if towing in the mountains.
If it were my truck I would do the following.
Air Filter: Run the OEM 4” Pleat filter, PN 53034249AA
Airaid MIT: Better throttle response, quicker turbo spool, better sound
GDP Intake Horn: Better throttle response, quicker turbo spool, lower intake air temps.
Home Depot CAI: Cooler intake air, better flow at high boost
Since you have an 05 be sure to leave the directional vanes in the lower 90* intake elbow, they don't effect flow and Holset claims they help the turbo operate up to 30% more efficient.
All of these mods cost less than a standard CAI, and will out perform them. My IAT
s are 6-12* over ambient under normal cruise with those mods, where stock they were 10-20*.
Then for the added power you are looking for a Smarty Jr will work very well for you. On SW1 you will see an increase in fuel economy and about 80-100 ft/lbs extra torque without any additional fuel. Your trans will also be happier on SW1. I would run SW1, Timing Default, Torque - 4.
You also need gauges, Boost/Pryo/Trans Temp.
Boost, try to keep it at 35 max.
EGTs with a Smarty Jr for 04. 5-07 5. 9's.
TM1: 1400 max cont, 1450 momentary
TM2: 1300 max cont, 1350 momentary
TM3: 1350 max cont, 1400 momentary
TM4: 1250 max cont, 1300 momentary.
That's just my rule of thumb for when towing, noting official by Cummins/MADS/etc.
Good Luck!