hey man, i asked the same exact question, and from what i've heard, you should go with injen...i am. The piping diameter is larger, thus more hp, and the AEM intake has a tendency to get hot, while the injen doesnt. Also, i'd go with the short ram injen. AEM didnt make a cold air system for the 240 because it actually losed hp when it was initially tested and since AEM and Injen are pretty much the same, i imagine it'll do the same on the injen cold air (someone please correct me if i'm wrong). That's just my 2 cents man, but as for me, i'm goin with injen.
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