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| AP Boss New Item: GRB tune (04/11/08) |
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Auto Produce Boss would like to announce the release of our new LAP ROM tune for the GRB Impreza STi.
New LAP GRB ROM Tune: 138,000JPY
The GRB initially baselined at 240.9hp at 5,482rpm and 244.5lbft at 5,159rpm on the Dynapack 6033. After raising the boost from 1.38kg/cm2 to 1.48kg/cm2(about an 1.42psi) and some tuning we netted a gain of 14.5hp and 53.6lbft of torque. This all on a completely stock GRB!
What is really impressive is how much gain is seen throughout the mid-range band. At 4357rpm we saw a peak gain of 60.6lbft of torque and 49.5increase in HP. We will soon continue testing with our new front pipe and muffler. This should show and even bigger increase in high end power. Please contact us with any questions at
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