[stang789]

I got a 97 cobra that is pushing like 550 horsepower. and I still got a stock 255 fuel pump and I think its needing more gas.

here is what i got done to it, let me know what pump should i get! i was going to get a dual because i heard thats what i need so please let me know i have no idea.

I am only going to list the main stuff.

30 pound injectors

Procharger and intercooler

Accufab oval throttle body

BBK long tube headers

bassani x-pipe

and i also have short shifter, better springs and shocks, 3.73 gears, and etc, but i dont think this other stuff has anything to do for how much gas i get or need so let me know please!!

I am fixing to port my heads and lower and upper intake, put forged pistons and rods, and put a 20 pound pulley on it.

[2oo5GT]

an in-line pump and bigger injectors will do. have you gotten it dyno'd or anything?

[stang789]

I HAVENT REALLY DYNO TUNE IT. I am going to but i wanted to replace the pump before i did it. so what brand and size? i got 30 pound injectors should i go to 36 or 42?

[2oo5GT]

If your pushing 550, i'm surprise you haven't maxed out the 30lb injectors, if not there already. I would go with 60lb if your going to port and add more boost. the 255 will be fine, get an inline BBK inline pump or maybe a BAP. Also that much power with no dyno tune or tune, might be on borrowed time. the A/F might be horrible right now.

[Brutal Metal]

Your choices are endless when it comes to fuel system upgrades, You'd be safe with 42 lb injectors but Siemens 60's are Good stuff! You could do and 03-04 cobra fuel tank with dual pumps but you'd be looking at upwards of $1000 plus labor.
I'd look into the Aviator pump as a bolt in replacement for the stocker and if you want you could add an external.

[2Manystangs]

You may need a bigger mass air meter too, definitely needs to be tuned to know for sure...I run 60lb injectors, 90mm SCT mass air and 255 lph pump with kenne bell boost a pump and NGK plugs on my blown Cobra just to make sure nothing is short...get a wideband a/f guage installed in your car, no use blowing the motor over a $300 guage...Kenne bell boost a pump is a worthwhile gadget cheaper than all the external stuff...on Ebay fairly cheap..good luck