Look i have found it:
ESS VT1-445 vs stock
[IMG]http://www.**********s.com/images/Products/ESS%20Tuning/mini-ess-tuning-e46-m3-supercharger-dyno-2.jpg[/IMG]
Look at other types of superchargers like AA stage1 on and E46 M3:
Do you see how V3si coupled with ESS tune on S54 do not make any real power gain before 6000RPM? and it's almost as powerful as stock before 4500RPM.
While in the AA curve you have power and TQ everywhere?
This is a response on why i think V3si is not suitable for S54 (european high rev engine), try to use a ROTREX C38-91 supercharger on an S54 and check the curve on that, you will shit bricks I tell you. I have a guy over here in my country that has installed an S54 with this supercharger and custom tuning and intercooling and such for drift competition.
His car makes literally 350 lbs/ft on 2K RPM and upwards from that to a peak on 4700 RPM and then back to that on 8K. he drifts his car in 4th gear on some long slides, i was in the car witnessing this brutal power.
350 on 2K, fucking 350, believe that, he calls the car a catapult
