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The weak point on the 9000 is the pins in the gearbox. When you start going over 250 bhp mark, you need to be careful how much torque goes through the box in first and second. Hirsch (and I believe Abbott too) reduce the power slightly at lower speeds to compensate for this.

If any of you have bleed valves and are spinning your wheels a lot in first and second, I hope you have some nice savings put away!

The latest Hirsch tuning kit for the 9-5 Aero takes the power to 310 bhp, which is apprently about as much as the chassis can handle with FWD.

Yes, 310 bhp - I've started saving!
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