Honda Pilots are not know as performance vehicles, What are you shooting for, some off-roading, making it sound like a muscle car? Before you go modifying it figure out exactly what you are wanting to do with and too it.
Deactivate Honda VCM in 3.5L V6 SOHC engines. The S-VCM Controller is an automobile grade, high precision tool that can reliably disable VCM 100% of the time, and would safely bypass in case the engine overheats. It does not use a fixed resistor or manually adjusted potentiometer, and is a much...
You have the J35Z engine but I thing the scenario is the same as this guy says. Honda J35A engine tuning
It will cost you a lot to build a really fast Honda J35A, and it will be cheaper to buy a faster used BMW M5 (or something else).
Nevertheless, to add some power, you may buy a cold air intake system, a J37A intake manifold, a J37A throttle body, Bisimoto cams, valve springs and retainers, performance headers and a 3 inch aftermarket exhaust system. Performance may be improved by head porting.
Instead of your heads, you can use J32A2 heads, J32A2 pistons, and a J32A2 intake and exhaust system. In this case, only a short block will remain of your J35.
All these performance parts will increase power to 320-330 HP at the flywheel. You can just buy a supercharger kit, install it directly on the stock internals, and get the same amount of power.
Building turbo projects for obtaining 400++ HP does not make sense, it is too long and expensive.