This was discussed over at the 300M forum. After putting a system on my previous V10 Ram I am not so sure there is any real gain. Now on my Firebird with a MAF I did notice a difference.Toneaero said:Dont want to bring up a sore subject but isnt our Hemi Durangos equiped with Speed Density and not Mass air flow? Meaning we wont get any gain from any of these setups? Correct me if im wrong.