That was my point. It comes with all you need and complete instructions for tuning. Yeah, you pay for it, but in doing so, you get a quality turbo kit that a good company put the time and research into. Being that he is turboing his DD, i think the smartest thing to do is to go with the Hahn kit. Everyone has their own opinion, but you have to admit, this is the easiest and safest way for him to achieve what he wants to do.
Here is the list of included parts for the ECOTEC 2.2L turbo kit:
HRC/ Mitsubishi Super 16G Turbocharger
Oil feed and return lines
Turbocharger exhaust manifold
Exhaust Downpipe assembly
Front-mount Intercooler
Intercooler inlet and outlet piping
Air inlet system w/ filter
Silicone couplers and clamps
Blow-off valve
Upgraded Fuel Injectors
Hi-volume inline fuel pump
Fuel Injection Control Unit
All required hardware, wiring, hoses, brackets, and gaskets
Comprehensive installation and tuning manual
Expert technical support, available every weekday
Over 25 years design and racing experience
Engineered and constructed by an industry leader, not newcomers
Three-year warranty on exhaust manifold