Stock Fuel pump?

[93F22A6]

Wats the flow numbers on the stock pump? good upgrade?

[EJX_Michael]

I think 125 LPH. ive been wondering if a fuel pump upgrade is worth it too...

[deevergote]

Why would you need to upgrade your fuel pump?

[benerman]

if you get a 255lph or such fuel pump does that kill gas mileage? or is just capable of the 255?

[NorcoAccord]

if you get a 255lph or such fuel pump does that kill gas mileage? or is just capable of the 255?

its just capable but from what my tuner says it will increase your nox levels.

Side note is a prelude fuel the same as an accord

[batever]

While on the face of it, increasing the fuel pump rate might sound like a cool idea, in fact, I suspect it isn't a practical idea and won't likely give you any performance gains. In fact, it could cause you repair headaches.

(Disclaimer: Before I get into this, I will tell you that I do not consider myself particularly knowledgeable about the fuel system, mostly because I've never had trouble with it. But I will share what I do know).

Here's why I think it probably isn't a practical idea to increase the fuel pumping rate:

If you incease the fuel pumping rate, you will increase the fuel pressure beyond original specifications. The fuel injectors, if unregulated, would spray fuel at a higher rate into the combustion chamber. however the fuel injectors are regulated by the ECU and the ECU will just dial the injectors down to reduce the fuel again. But can the injectors dial down far enough to compensate for increased fuel pressure? Who knows? If they can't you'll just have created essentially a car that is incapable of idling at its previous level, or you will have created a need to readjust your idle. You may also create the effect of having a jumpier throttle. I guess maybe if you spray more fuel in the combustion chamber you can exert more power. But the engine itself is probably not engineered to handle the upper end of the power you would deliver. In the meantime you will be probably have some weird unanticipated negative result on the fuel injector system. Of course, if you don't mind paying for the power in reduced engine life or possibly other stuff, like a fried catalytic converter due to incomplete combustion because there isn't enough oxygen to fully combust the fuel at the upper throttle levels, for example--and possibly unburned gasoline vapors going out your exhaust, creating a potential for post-engine combustion, or burned valves...

of course, maybe you thought of all that, I'm just thinking out loud here.

One question might be, is the fuel pump regulated by the ECU? If it is regulated by the ECU, you would need to figure out how to get the non-spec fuel pump to play nice with the Accord's ECU. Not my idea of a good time.

If you have a bad fuel pump, replace it with a new, stock, Honda fuel pump would be my advice.

If nothing is currently wrong w/ your existing fuel pump, I would be careful of switching it out for one with a higher pumping capacity without looking at the potential consequences first.

[BLUBB2]

Useless unless your using any type of force induction.
Stock flow is around 110 or 120ish for a Prelude.

[evil_demon_01]

Even a turbo application, doesn't REQUIRE an upgraded fuel pump. Its nice to have for safety and upgradability, but not necessary.
Some of us have pushed over 250hp on the stock pump

[ATS666]

its just capable but from what my tuner says it will increase your nox levels.

Side note is a prelude fuel the same as an accord

If you increase fuel pressure and or flow your car will run rich and will lower Nox because the combustion temps dont get as high.

[19dabeast85]

None of you seem to realize how our fuel system works, IF the regulator and return line can handle the extra fuel, the injectors will see absolutely no change in pressure. The system will simply be circulating more fuel back to the tank than OEM.