I bought my black '09 Silverado LS 4x4 back in october its a regular cab, long bed with a 4.8l v8 and 3.42 in the rear heavy duty locking differential, tow package and traction control with stabilitrak, all pretty standard stuff for 09. I'd like to increase throttle response and torque as well as horsepower without doing an engine swap or anything crazy expensive. my first instinct is the stock intake isnt cutting it so I was thinking of starting there as well as custom exhaust in the near future. I've been researching some performance chips and I was wondering if any fellow daily chevy drivers with a bit of a heavy foot like me could make any suggestions on which way to go here or where to start anyway. I appreciate any suggestions and I'm proud to have a bowtie on my tailgate!!!!!