Originally posted by b16sleeper
How much boost can a stock 99-00 si handle with a turbo setup? I was looking at the vortech supercharger w/aftercooler, and that says 8-9 psi, would this be a similar psi for turbos?
i've seen people run as high as 12psi daily driven on gs-r engines, which are very similar. this is safe as long as you have it well tuned by someone that knows how to tune and on a dyno w/ a wideband o2 sensor, and if you dont hit max boost all day long on these hot days. i've seen as high as low 300whp out of 10psi on a stock block, just tuned very well with an upgraded fuel system.