Injectors for Supercharger?

[foxmustangman]

So i'm saving my money and planning on getting a Kenne Bell for my 'stang by summertime. What # injectors should I use? I am planing on running 8-10 psi and was thinking 32# Injectors. Also how big should my throtle body and MAF be to compliment the supercharger? Thanks.

 

[BlownFiveLiter]

Go at least 42's. When/if I ever get mine going with the Vortech, I'll be running 60's, plus a 255lph in tank pump, and a Vortech T-Rex 255lph external. Overkill? Maybe, but I'd rather not lean out.

 

[noneck134]

I agree with stang. I have a Vortech 8 #s 42# injectors 255 pump custom chip and dyno tune. I was also able to ditch the FMU. Runs great.

 

[Foxfan88]

if getting the car tuned (highly reccomended) and are planning on increasing power (which you probably will by cranking the boost up) then i would say 42s at a minumum, i'd even go larger. 42s can be tuned for with a good tune and idle and drive awesome, so there isnt a reason to not run the larger injectors, get a big pump also. mustangs have a return line so getting a large pump and injectors is the best way to do. dont use the FMUs, they work decent but its a hack way and just not the best way to do things.

 

[MY 85 GT]

I agree with the FMU but in my case i have to use it till i can get money to do they next step..Im going with the Kenne Bell and im going to use the FMU and i am going to install a 255 lph pump right away, Then in a few months i'll go with injectors and A Tune this is my daily so i have to do it in stages...

 

[foxmustangman]

FMU? Brain fart? What is that again?

 

[MY 85 GT]

Fuel Management Unit...closes the return line under boost supplying more fuel on demand i think...lol

 

[foxmustangman]

Got it! Thanks. Okay, so what about MAF sizes and what not?

 

[MY 85 GT]

Got it! Thanks. Okay, so what about MAF sizes and what not?

Im going with the Kenne Bell..I was told yes you need a bigger fuel pump and should get 42# injectors and a MAF to match or a PMAS...But its not needed until you go higher then the basic kit which i have no plans of doing ...im staying at the 5-6 psi kit...so im going to get a wide band Air fuel gauge to make sure i dont go lean under full Thorttle...I might do a dyno tune down the road but KB and i talked to a few tuners said i can run the FMU it might run a little rich ..set that spark plug gap at .030 bring the timing back to 5 degress well start there and use at least 91 octane...so thats what im going to do for now until i have funds to upgrade...

 

[foxmustangman]

Awesome! Thanks for the info!