Will An Aftermarket Fuel Pump Give Bottom End Torque?

[Brezza]

hey guys,

i was just wondering i have a fully rebuilt forged motor with all the goodies! pistons, bearings, recon head, large head gaskets, baffle, oil restrictor.

also have 2860-5's with a full 3in exhaust off the turbos, pod filters.

running 13psi and getting 250rwkw

still have stock ecu, injectors and fuel pump

i was wondering if i replace the fuel pump, the car would maybe be more responsive at low rpm, off boost and spool up quicker?

i know an aftermarket ECU would allow for the tuner to adjust timing and fuel maps to minimise lag. but the question is whether a fuel pump would make a considerable difference with the stock ECU??

cheers,

[R31Nismoid]

A fuel pump supplies fuel.

Stock ECU, tuned ECU - Makes no difference

Unless you have a fueling issue - you will see no gain in performance.

Why are you running -5's and a build motor, without a ECU/injectors and every other supporting mod you need...

[Johnny]

I would definitely get it tuned asap as a forged motor aint a cheap thing and you want the best out of it; the ECU will gain plenty of low end torque and overall power, the pump and supporting mods simply support your ending achievement.

[rob82]

A fuel pump supplies fuel.

Stock ECU, tuned ECU - Makes no difference

Unless you have a fueling issue - you will see no gain in performance.

Why are you running -5's and a build motor, without a ECU/injectors and every other supporting mod you need...

Hey there is nothing wrong with that, the standard ECU/injectors are good for 280-290rwkw.

[R31Nismoid]

-5's are good for 400rwkw+

If you only wanted 300rwkw, you'd use different turbos

[Brezza]

A fuel pump supplies fuel.

Stock ECU, tuned ECU - Makes no difference

Unless you have a fueling issue - you will see no gain in performance.

Why are you running -5's and a build motor, without a ECU/injectors and every other supporting mod you need...

simplest answer i can give you is "because of the $$$"

takes a little time to save up some cash to get fuel pump, ecu and injectors after spending 9k on the motor and 3k on turbos incl. installation.

not trying to be sarcastic.

[Brezza]

-5's are good for 400rwkw+

If you only wanted 300rwkw, you'd use different turbos

plenty of people are using the -5's with under 400kw

picked them up for a great price brand new.

once i get the supporting fuel and ecu mods will probably be trying for over the 300rwkw mark

[R31Nismoid]

Yes i realise that... -5's/-9's are all $1100ea new if you shop around and know where to go. From memory i can get cheaper than that even...

But if you only want 300-340rwkw, then the -9/GT-SS is the way to go... but anyways enough threads with all that info in it these days

[quiksta]

Yes i realise that... -5's/-9's are all $1100ea new if you shop around and know where to go. From memory i can get cheaper than that even...

But if you only want 300-340rwkw, then the -9/GT-SS is the way to go... but anyways enough threads with all that info in it these days

Please PM details where i can find -5's or -7's for $1100 each?