i love the aem cai. sweet sound and nice gains especially at higher rpms. if u have major plans for ur car though u may want to consider volant or even the focus central cai. those to two systems are nice b/c u can upgrade the MAF if u wanted to. that is the only thing i regret about getting the aem cai. Injen intakes basically just look nice in the engine. the actuall system id a very poor design, if u look at it, the piping runs across the top of engine and down right in front of the radiator and everything. this is just taking on so much heat defeating the entire purpose. the volant and fc cai are also a better design b/c of the materail they use to build it, i belive the volant system showed the best torque out of all intakes. do not qoute me on that but i do belive it was impressive!