upgrading injectors, what else is needed?

98COBRA281

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Nov 24, 2007
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i will be upgrading to 24lb injectors before i go for a dyno tune, will i have to get a maf thats calibrated for 24s, or can my tuner calibrate mine to the 24s, and will i need a bigger fuel pump? if so what would be a good one.

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DBMSTNG

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the tuner will be able to program for the injectors. as far as the pump, not sure if you need one, but the return style pumps are fairly cheap. might want to get one anyway since the car is older.
 

98COBRA281

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the tuner will be able to program for the injectors. as far as the pump, not sure if you need one, but the return style pumps are fairly cheap. might want to get one anyway since the car is older.
thanks, what pump should i go with, and can i put the 24s in and then drive to the my tuner, its about 15 miles from my house, or will it run like complete chit?
 

DBMSTNG

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thanks, what pump should i go with, and can i put the 24s in and then drive to the my tuner, its about 15 miles from my house, or will it run like complete chit?
being that you have a return style, you might need a fuel pressure regulator to adjust for the 24's. not 100% sure. you probably could run the injectors and run really rich, but i'd just switch them in the parking lot of the dyno before. Walboro makes a 240lph or so pump for less than $100. you can use a returnless pump also. the SVT Focus pump or the GT pump are both fairly inexpensive as well.
 

98COBRA281

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Nov 24, 2007
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being that you have a return style, you might need a fuel pressure regulator to adjust for the 24's. not 100% sure. you probably could run the injectors and run really rich, but i'd just switch them in the parking lot of the dyno before. Walboro makes a 240lph or so pump for less than $100. you can use a returnless pump also. the SVT Focus pump or the GT pump are both fairly inexpensive as well.
maybe ill just swich them out at my buddies house, less then a mile away, i have been lookang at fuel pumps, and there all for xx-97, 99-04, is a 98 different from a 96 or 97?

i see alot of people running the focus pump, maybe ill go with that........
 

CobraRed_96_GT

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maybe ill just swich them out at my buddies house, less then a mile away, i have been lookang at fuel pumps, and there all for xx-97, 99-04, is a 98 different from a 96 or 97?

i see alot of people running the focus pump, maybe ill go with that........
98 is different. Focus pump is returnless.
Go BBK or Walbro 255 intank. Only like $99 from the supply guy on corral.net. I can find it if you want.
 

DBMSTNG

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98 is different. Focus pump is returnless.
Go BBK or Walbro 255 intank. Only like $99 from the supply guy on corral.net. I can find it if you want.
you can use a returnless pump on a return style system, but not a return style on a returnless. so pre 99's can use either.

so 98 is different from 96-97, and 99+?

there should be no difference between the 96, 97, and 98's. 99+ changed to a returnless style fuel system.
 
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