Hi, I am looking to put 24# motorsport injectors, new fuel pump, and new MAF on my 01 5.4 F150. Does anyone know if this is the correct MAF to use? Part number: M-12579-L54, which is a lightning 01-04 90mm direct replacement. I would imagine that it is tuned for 24#, I just wanted input on if it's the way to go or if a Granatelli or other is prefered. Also 24# enough, where can I buy them? I don't know if the stock fuel rails could handle anymore, or if I should be looking for anymore fuel out of standard 5.4 with a couple bolt on mods. I know the MAF has to be tuned to the injectors and that a custom tune is required.

 

To install differant injectors and the 90mm mass air you will need a tune. With a stock motor there will be no real advantage to thes mods, the stock injectors can supply all the fuel you need, and that goes for the mass air. Stay away from the granetelli mass air, When I put my truck on the dyno the dyno operator told me that they were junk and cost hp so we did to runs with the Granetelli and then put the stock one back on he was right the stock one made 25hp more than the granetelli, the granetelli makes the engine run very lean. Unless you are going to a supercharger stay with what you have.