does anyone know how gm got the extra 20 horsepower gain over the 2001 to 2002 i heard it was a computer chip nothing internal if so or not how can it be done. also i'm looking to get a car that will do 0-60 in 3.8 3,9 range 1/4 mile in 11.8 11.9 how would you guy go about modifiying a car to get this kind of preformance and how much money can i expect to pay thanks guys
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