Quoting belize1334:
Speed density is absolutely the best in my opinion. The cost of setting it up won't be appreciable different than buying a 3G maf, filter, and adapter harness. The added cost comes from needing a wide-band to tune the setup since you can't just expect it to work instantly the way you do with a MAF. You sould note that this is also true if you try to run a GM maf. You must tune it or it won't be right.
well i do have a wide-band funds which is my next purchase hopefully in the next month so ill have that already hooked up before i make the ECMLink purchase. Is setting up the SD more complicated than setting up the Maf? I dont know how much truth there actually is to it, but according their website you should be able to use the tables they provide as a base setting to start with and it should be driveable. Im not sure if this only accounts for the Maf tables or should be able to do so with the speed density as well