leadfoot

Getting ready to install turbo in the tC.... bought 550cc injectors.... DO I NEED TO UPGRADE the FUEL PUMP has any buddy done it yet please let me know...... or are you all still running stock pump..... please let me know want to to do this right....

tC_2NeR

No your just fine with your stock pump.

Youre good to go

Rydrdg

I am running pnp 550 cc with my greddy turbo kit and it is stock fuel pump

leadfoot

Well" your cars are all still running alright huh.... weird i was told to change it.....since im running bigger injectors ans such but im using the AEM FIC>>> to control it....

Crippie

ive heard the stock fuel pump is good till about 400+hp... im workin on 300 with stock fp

leadfoot

Well that good to hear are you all enjoying the fun of a powerful car.... I live in WA State and have seen two turbo'ed tc's and they both look like crap.... but i cant wait till this is all done what exhaust are you running i plan on running 3" Ptuning exhaust...

Crippie

i opted for the 2.5 tsudo N1 spipe back system with a 2.5 creative compacts spipe. figure if i ever up my setup, ill go to 3.0 then, but by that time, ill have to swap out turbine, mani, buy an external wg, then up the piping to 3

paul_dezod

What type of power are you looking to run regularly? If less than 300whp, you will be fine with the stock pump. If more than that DD, I would recommend the pump.

Joe_Dezod

Word. The pump keeps up decently up to about 300whp, but then the pressure starts dropping off significantly.

Having a stronger pump with a good FPR will keep the fuel atomizing well, which prevents detionation. That allows you to make more power with a longer lasting engine. This isn't necessary, but it's always a nice upgrade.

Ace83

iTrader: (6)

so up to 300 whp huh before i upgrade? i thought it was more, but i'll just get one if i hit 300s just to be on a safe side..

Joe_Dezod

You definitely don't need it. I made over 300whp for a long time and never ended up upgrading.

We suggest it because it's better for the car. I'm not sure how much power you can make with just a pump upgrade, but having less detonation is always a plus.

The new Mazdaspeed cars and the 335i BMWs run 1600psi for fuel pressure! That's how they get to turbo their cars while still running hgih compression. They have direct injection, so don't expect to come anywhere near those pressure levels for our fuel setup.

Ace83

iTrader: (6)

less detonation, does it mean that it will richen up you tune after the upgrade or it will just improve/maintain a consistent fuel pressure thus preventing fluctuation brought by the bigger injectors and more fuel demand?

enjoithis

If you upgrade the fuel pump do you need to adjust the entire map?

paul_dezod

Yes. It will richen the entire map across the board.

enjoithis

evenly? run a % decrease across whole map?

paul_dezod

Not really.

enjoithis

haha worth a shot :/ well looks like im buying a fuel pump then doing a retune!

tcdaily

well technically anything bigger than stock you would need a different fuel pump, because it was designed to work with stock injectors, although running 550 and 440cc with stock fuel pump is fine, i have a walbro one sitting at home just in case though..