I was thinking of getting a Walbro Fuel Pump from K2rd.com.



Walbro In-Tank Upgrade Fuel Pump

Replaces stock fuel pump in-tank

Flows 255 litres/hour at 40psi

Supports up to 400bhp at the flywheel

Includes all hardware



Would this affect my idle? How do I control how much fuel it sends to the engine? With a S-AFC (which I'm getting) or a fuel pressure regulator or both?



My other question is, will I be able to control upgraded injectors easily with a S-AFC? I really don't want fuel control problems, so should I just get additional injectors? If so what size? If I just upgrade my injectors, will bigger secondaries make fuel control difficult enough that I would need a stand-alone?



Thanks for all the help.

If you don't go bigger than 720-800 cc injectors you should be able to do it with the SAFC. With a stock FPR you may runa little bit rich at idle, but it won't be too bad.

Would it still run a little rich w/ a haltech?

You can tune your car for higher fuel pressures by leaning things out a little, but don't play with things too much.

With the haltech you'll be able to control it and make it as rich or lean as you want.

The fuel pump will increase your pressure and run rich at idle with a stock computer, u can lean it out a little bit eith the variable resistor(depending on the year I think) or the SAFC.

Be warn, you'll run into the hot start problem much faster with a high output fuel pump.



C

thats what i was wondering, cuz im getting both and didn't want to run rich.