8000rpms shouldn't be a problem especially if you aren't taking it to the limit all the time.
This has been one of the biggest up and down threads on the forum. It was all great when Stillen did their press release, then the tunes all stopped working save a few. Then it looked like RCZ and his custom tune with some supporting mods made 450whp on a dynojet bringing back some enthusiasm and now it looks like many of you aren't event hitting the advertised dynojet numbers. This seems almost like false advertising to me. It shouldn't take a custom tune and a plethora of supporting exhaust mods and drivetrain mods reach the advertised power. Stillen should have been more honest or at least waited until they had done a few installs to see if they could meet their own expectations. I guess we'll have to stamp this as incomplete as the fall rolls on in.
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2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold 
2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling
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