I have a 4.3l 2009 Chevrolet Silverado single cab, short bed. I installed a single in (3 inch) and a dual out (2.5 inch) exhaust system. The muffler is a flowmaster 40 series! Now my question is, did I gain horsepower and torque? And if so, how much?
Also, any suggestions on how I can gain more horsepower and torque? Thank you!
Also, any suggestions on how I can gain more horsepower and torque? Thank you!