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TOP SPEED


jimalypse

Top speed for a 3.1 Grand Prix  

  1. 1. Top speed for a 3.1 Grand Prix



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yesterday i topped out my grand prix. only 124 MPH. I have a 5spd 4 gear went all the way to 110 MPH i shifted to 5th and at 123 or 124 the computer shut off fuel. i could of easily hit 135 MPH my RPMs were only at 4,000 when it shut off. What do you guys think. I need a performance chip will let me max out my car.

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