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Blog forums Model Specific Discussions Saab Saab 9-4 Aero 2.8T (2011) Saab 9-4X Dyno Results – Vermont Tuning Vs Hirsch

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    VTuner
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    One of our customers recently upgraded his Hirsch tuned 9-4X to our Stage 0 tuning software and ran both on a DynoDynamics AWD dyno to document the results. We picked up ~ 7hp and 27 lb-ft at the wheels over the Hirsch calibration. HIrsch rated their 9-4x software at 330hp. The Stage 0 calibration installed for the dyno run was slightly reduced from 2000 – 4000 rpm due to some drivetrain harshness reported by another customer. We have since identified that this was isolated to the one customer’s experience and have increased the torque that should be closer to 277 lb-ft at the wheels from ~2500 up to 4800 rpm.
    Vermont Tuning Vs Hirsch Dyno Results!

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