How much boost on stock fuel pump?
 

Hallo,

i have a problem with my fuel supply and i'am not sure if it is the additional fuel pump. So my plan was to put the second pump out of the car and so a testdrive with the stock pump only.

now my question, whats the hp/boost/volume limit of the stock fuelpump
of a 91' CRX EE8 B16A1 Engine???

currently i have 280ccm Injectors installed, Fuelpressure is stock and run 8psi of boost.

Greets
Malte.

Re:How much boost on stock fuel pump?
 

you're not running anything for fuel management other then 280cc injectors!?!

Re:How much boost on stock fuel pump?
 

Sorry i forgot to mention, i run a standalone as engine management... but i think it has nothing to do with my question! ;-)

Greets
Malte.

Re:How much boost on stock fuel pump?
 

if u where running a fmu would there be a diff. in the amount of boost u could run compared to a standalone on a stock fuel pump?

Re:How much boost on stock fuel pump?
 

yeah, an fmu works the fuel pump harder b/c all it's doing is raising fuel pressure.

Re:How much boost on stock fuel pump?
 

i said that so he wouldnt wounder why crx88si questioned what fuel management he was running.

Re:How much boost on stock fuel pump?
 

oh ;)

Re:How much boost on stock fuel pump?
 

so,

my question got answered, the stock pump can handle 82 LPH so it is possible to run 345ccm injectors... so it is ok for my 8psi...

Thanks to all.
Malte.

Re:How much boost on stock fuel pump?
 

i'm running 11 psi with 450cc injectors, and a lot of people are running more than that, so yeah, i'd say it's very possible ;)

Re:How much boost on stock fuel pump?
 

you can run 450s inj. on the stock pump for a while but it's gonna wear out a whole lot sooner than a walboro 255
and when your stock pump starts to wear out, guess what? it
the Atkins diet for your air/fuel ratio. your car will be running leaner and leaner as the fuel pump wears out. then
if you're lucky, one day when you go start your car it won't start and you find that it's the overworked stock pump. if you're unlucky then it'll go while you're making a wild run at 8-10psi and KABOOM! bye,bye, ring lands-connecting rods. wish you the best of luck. walboro pumps are $89.00 on ebay. don't run it with the stock pump for more than 1 months, just a suggestion. :'(