I have had my blazer for a few months now. at first it was just a car to me, but after running by this forum and seeing how cool i could make mine look and run i decided to keep my blazer just today i got rid of the stock stereo and speakers and replaced it with pioneer 6.5 speakers and pioneer stereo. i still want to do more with the sound but i want to focus more on the engine and exterior. What can i do to increase Horsepower, and what aftermarket parts do you recommend? help would be greatly appreciated.

 

turbo charge :P

 

upgrade your air intake, if you cheap put in a K&N drop in, increases 2-3 hp, or get a Cold air intake, increases roughly 5hp.
Then get a high flow catalytic converter, and exhaust. EX: flowmaster, magnaflow.
Then get a PCM tune and ta-da I estimate a 15-20hp increase.
But just look around and use the search button, this question has been asked HUNDREDS of times.