I have nothing but good comments to say about the Magnacharger supercharger system. (Other than the throttle is a switch rather than an analog device.) The acceleration is still way crazy above 4k. I have a grand total of about 1000 miles on my Magnacharger and am still trying to figure out how to drive the "new" car. I have finally realized that the cruise control surging I have been feeling is a result of the system having way more power than the stock system. The blower makes the accel and decel rates on stock cruise control too aggressive; in other words the system surges going down the road. It's funny, but it's not a bad problem to have.....
I would not hesitate for a second to recommend this system