I just added an FCD and upgraded to an s5 turbo with a free flow exhaust, and on a quick drive i saw about 11 lbs of boost and climbing.

SO im going to get a walbro fuel pump, but not too sure what sized injectors to get? Can i keep the 550 primaries but just get upgraded secondaries?

thanks!

 

yeah u can keep yr primaries, and get some 750cc secondarys, and then id get a safc, or something to tune them

 

i think you will need to upgrade the ECU to be able to use any other injectors. Just because you plug them in, doesnt mean the ECU will recognize the larger size injectors. You can get an RTek ECU for like $120. That will let you use the 720 secondaries.

If you keep running the car how it is now, it will probobly blow the motor because of lack of fuel.

 

Get
Walbro fuel pump
Fuel pressure regulator
2x720cc fuel injectors for your secondaries
Rtek 1.7 ECU upgrade to handle the injectors the right way.

FPR is used to pull the fuel pressure back down to stock levels after installing the walbro which will most likely overtake the stock fpr.

 

Eventually i will, but would it cause any problems running 750 secondaries and not having the SAFC at first?

 

my bad just saw the other posts. Cool, thanks for the help fellas.

Will i still need the SAFC right off the bat with all the mods mentioned by digi7ech?

 

Yup.

 

no... SAFC or Rtek.
Not both

 

im going to go with the rtek.

thanks stylEmon