Quote:
Originally Posted by xorbe
Can someone explain to me what happens past 5500 RPMs? It's not like the supercharger unit stops spinning -- in fact it's speeding up of course. And there is no change in engine timing. Are the stock injectors simply running out of steam? What's the technical cause?
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The boost curve has changed. Instead of getting 5psi at around red line, now gets it sooner so more power on the low and midrange. But if you think about it, you get the same hp sooner, and more torque.