…i just thought a SC is cheaper then a turbo kit…and its always at constant boost. where as a turbo has to spool up…
Not true actually. The supercharger kit for the Spec 5 is a centrifugal supercharger, which has many similarities with a turbo setup. Also, at speed the turbo does not need to spool - it should already be up there. The turbo would only need to spool coming off idle or low rpm. Centrifugal superchargers work in much the same way. Roots type superchargers also need rpm to drive the charger anyway, and they don’t make their max boost until the rpm of the engine goes up either.
You haven’t mentioned anything regarding fuel management and tuning in those prices. I also believe you get what you pay for, I think your going to pay for a big mess and possibly a blown motor but hey let me know if you need any fab work.
The compressor side of a Turbo is not the same as a Centrifical super charger it is similar but not the same. Superchargers as you know are run off a belt that is turned by the crank pully. However in order to spin the compressor the drive pully is mated to gears inside the supercharger body it is not a 1:1 drive with the crank. So to try and bolt the compressor side of a turbo up as a supercharger would have tons of custom fab work and engineering involved. As for people mentioning your fuel issues it is most likely you will need largers injectors and a larger fuel pump to supply the increased fuel demand of a supercharger. AFCs are not the best fuel managment system for a FI vehicle as you can only adjust air fuel and have no control of your timing E-manage, Utec, unichip and similar piggybacks that allow timing adjustments would be a better pick. I have owned superchargered and turbo cars in the past, I agree that superchargers are eaiser to set up and if you find a SC system that is internally oiled you dont even have to run oil feed and return lines however turbos are more efficent as they do not take horsepower to run them thru parasidic drag. Good luck with your decision.
