Some very interesting comments so far...Hope you all don't mind if I offer a little bit of a rebuttle.
Stillen has already developed the supercharger for the 07-8 Titan.
http://www.stillen.com/product.asp?id=STISUPR03&c=PE&year=2007&make=NISSAN&model=TITAN
The 07-08 VKPro will be ready in a couple of weeks.
We are gauging interest in the Titan owners that have cams and are also interested in superchargers. Just like when the guys with superchargers wanted long-tube headers we developed a custom tune for them as well.
The VKPro is designed to be a performance part. 87 octane is not a performance fuel.
We do not offer adjustable tuning for our superchargers for many reasons.
#1) If the motor were to blow up because someone improperly tuned it, who would everyone blame? Stillen
#2) We have CARB legality on this kit and by law the kit can not be adjustable otherwise the emissions would be altered therefore it would no longer be within state regulations and would make the kit illegal.
#3) We built this as a KIT. By kit we mean an all inclusive package that can be bolted on to the vehicle. Pre-tuned and ready to run. We have sold HUNDREDS of these kits.
Let me ask another question then...
If Stillen were to make a "tuner" kit that would consist of everything except for our piggyback and some of the other components involved in our tuning. Then we said go ahead and ask UPrev or another company to tune the truck for you, how many people would be interested in that as an option?
Again, I'm not saying that we're going to do that and I don't think we would want to do it. I'm just curious.
In regards to the piggyback tuning system. If we had a source for hand-held control units we would use it. I have personally talked with the engineers from Hypertech, SCT, Superchips and many other similar companies. All have told me that they either tried and failed to make something work, or they weren't interested.