Originally Posted by Justintoxicated
only 4hp? I doubt other filters are actually gaining more that 4hp... The nice thing about AEM is that they filter very well, K&N's do not.
I'm getting more than 4hp on just a K&N drop-in and snorkel-delete, let alone what others have been getting with the Typhoon or Steeda intakes.
I'm more inclined to believe that the AEM is getting more than 4hp, but that AEM erred on the side of caution in the publication of their numbers.