This may be a stupid question, but what is the difference in a regular maf and a blow though maf...? I am needing to know what to use on my 94 mustang thats getting a single turbo. Thanks

 

Blow thru mafs need to have a section of straight piping, bends throw off their readings. Draw through arent as picky, but they are usually too far up the piping to give super fast response. Most boosted guys go with blow thru

 

Both MAF choices will work fine and give you no problems with a typical set-up around 500rwhp (even more so with a draw thru MAF, cause they do tend to promote better idle and drivability) There are many MAF's out there that would work great for blow thru set-up's... obviously PRO-M racing's or PMAS's blow thru "Pro tube" 75mm or 90mm would a no brainer to use, another route would be using C&L's 73mm, 76mm, or 80mm MAF like HP turbo (turbochargedpower.com) uses with there kits. Another option would be an adjustable calibration ABACCO drawthru/blowthru MAF which Anderson Motrosports uses on alot of thier customer's blow thru turbo cars)

Choise whatever fits your budget, as each MAF listed will do the job and then some.