Canned tuners are a waste of time, they are preset to one size fits all for all platforms of titans within their sold year range. Each and every single titan will run differently with the same mods because a bunch of different variables such as where you live, altitude, type of fuel, overall weight, etc etc...
Hell even the light amount of ethanol in your common 87-89-91-93 octanes will vary in percentages across each state and during summer and winter months.
Uprev has cusomizable control over AFR targets and compensation, global ignition timing, Camshaft timing for intake cams (07+ engines only), WOT restriction elimination, throttle sensitivity control, Expected torque values changes which can alter line pressure within factory limits under different loads. MAF Scaling adjustments, Ethanol Mix Ratio (lol thats a fun one *sarcasm*, try to get it to zero %, you're tuner will understand) and the list goes on.
You also can get 5 switchable maps, unless you are an 04 if i recall correctly, then you can only have 3. I can't remember exactly.
You can use Cipher to live view monitor parameters such as AFR Wideband, narrowband, maf voltage/GMS, engine coolant temp, transmission turbine speed, Engine Rpm, wheel speed, ignition timing, Cam timing advance, and way more.
Only parameters you can't log or view with Uprev is Engine oil temp and Transmission temp. Engine oil has a pretty dang good cooling water/oil cooling system and haven't seen any issues with oil temp related problems.
Transmission temps, thats not a problem, just remember once the gauge first hits normal mark in the center you've hit 158*, it won't move past that spot until its like 200+ or so.
Fix that with a transmission cooler SR4588, good writeup on here.
Lastly, there is a free patch for whats called the "Burnout Mod'' so now you can apply brakes and do a burnout without power being cut.
Typical map layouts are as follows for most.
MAP 1- Performance 93 or 91 octane
MAP 2- Performance 87 octane
MAP 3- Fuel economy/towing (i don't understand these two....)
MAP 4- Stock
Map 5- Valet (throttle cut limit to around 3000rpm) no one can steal your sheet.
I myself only use MAP 1 performance 93 octane. Gets same 14 city and 17hwy, equal to stock and i've got lots of mods.
Its all about who tunes you're vehicle.
in summary, stay away from canned tuners, buy uprev, spend money right the first time around.