Just wondering if anyone had an opinion on whether there was a difference.

 

You might want to include MMR if you are comparing. I am not sure of the difference other than a name. But I know they all require a tune to get a worthwhile performace increase.

 

the c&l kit comes with a complety different intake manifold that attaches to the throttle body, not sure what it is made out of, aluminum I think. MMR is supposed to be comming out with something simmilar but made out of a composite material that is supposed to stay cooler.