2007 silverado ext cab 5.3 342 gears, 24inch wheels, procharged 9lbs , and flowmaster exhaust.. 398 rwhp... is this good or do you think my tune is offf?
2007 silverado ext cab 5.3 342 gears, 24inch wheels, procharged 9lbs , and flowmaster exhaust.. 398 rwhp... is this good or do you think my tune is off
2007 silverado new body 5.3 procharged 9lbs of boost. comp cam custom grind... 463 rwhp and 401 torque
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