Well if you're in the market for a specific "kit" then everything you need should be included. Most often times the hardest part about installing a roots style unit (what i assume you are looking at) is the fabrication in the bracketry, alignment with the crank pully, Throttle linkage adjustment to modified Throttle body, and piping fabrication. The fuel tuning is similiar to what you would see in any B series turbo application. Most often times a simple/cheap RRFPR, larger injectors, and an O2 Sim are all that are required. If you're looking into JR kits then that should all have been done for you already. Most of their kits a "bolt on/plug and play" affairs. So as far as "tuning" there wouldnt be much required, if at all. Other then that there are endless ways to have the set up tuned on a Dyno for different performance characteristics: adjust cam timing( ie more Valve overlap for better scavenging), adjust fuel maps if Standalone is included, underdriving/overdriving the SC unit for greater effeciency/higher boost, Having the Rotors re-coated etc etc....Originally Posted by efman
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