I have a 09 si with a few mods and wanted to know the hassle kind of of the install and the perks of both superchargers (((CT AND KRAFTWERKS)) and which one would give the best bang for my buck ? Also both are bolt on as I've read do they both HAVE TO BE TUNED? Or can they run on stock ECu bc no one around tunes or dynos cars for me and my area.. I want something that I an install and not have to tow 200 miles to a dyno shop or get tuned so what's the best?

 

Anything adding Air (from the supercharger), and additional fuel, require tuning. doesn't matter if its 1psi or 50psi.

Gotta get tuned in order for it to work, bottom line.

 

With most setups, you can run a basemap (basic fuel/ignition table to make the car drivable) which allows you to drive to the tuner, instead of towing it. I used to live 280 miles from my tuner and made many a trip down to see him on basemaps...just be sure to drive nicely and stay out of boost.

But as TheShodan said, you have to tune it...there's no other option (unless you want to rebuild that k24 once it pops)