Reviewed By gary g (JACKSON, NJ) Reviewed for a 2013 GMC Sierra —3/7/2018 3:09 PM
1st thing i heard was quieter engine. then when driving lower rpm. last but not least, tiny better gas mpg.highly recommend.
Reviewed By Ryan S (Anoka, MN) Reviewed for a 2011 GMC Sierra —12/21/2011 4:53 AM
Prefilter from aem is a good product and fits the filter well as they are made specifically for each filter. Hopefully it prevents my filter from getting dirty super fast. I used this prefilter with an aem cold air intake kit.