[Aaron81]

Just wondering if there any things guys are doing with bolt ons out there to pep..up the 4cyl 5 speed colorado for torque speed etc.. new to this breed of motor so figured I'd ask aside from cold air intake and all that stuff that really never makes for much if a diffenece

 

[GregDAP]

Header or pre cat delete, ported throttle body, get the pcm tuned by @supermodulation