Well, this question might have been asked several times, but I didnt know how to correctly word the search.

Ive know people that just use a more agressive intake cam, but dont get the corresponding exhuast cam with it. I know someone with a GSR, with a CTR intake cam, makes good power, but wouldnt it make more with the exhuast cam? Same goes with ITR cams...

Is there a benefit? or is there no noticeable gain? Does it help with low end torque or midrange? or is it just a cheap way out? Please inform me!!!