Never saw an import I couldn't keep up with, outran an upgraded Mazda RX8 and a Kompressor Benz, kept up with a Porsche til he hit 4th gear. Take off the traction control, it'll roast the front tires for a block.
Most times, the boost was never on. Going up bigger hills at 70-75MPH, it'd kick in about 6psi and float up the hill. Stomping it down from a standing start, I remember getting 13.5psi boost. So it's really not much, but the extra power sure was nice when necessary. I saved myself from more accidents with the Go pedal than the Whoa pedal.
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