2002 chevy trailblazer_ltz
This is crazy.. check this out. My girlfriend and I both have 02 LTZ's, she has 78K miles on hers I have 55K on mine. We both have the same mods, K&N and identical PCMforLESS tunes. Yet, our trucks sound SO MUCH different when you start them. Mine is loud as hell, the fan is louder, the engine noise is louder, my piston slap is louder and my clicking is louder (injectors? .. there aren't any rocker arms in these motors).. its just weird. Has anyone else compared their trucks to others?