Are there any Pros or Cons to upgrading the fuel pump to a 255lph walbro before anything els eon a completely stock car? This is in preparation for my turbo which is coming within 2 months. Someone told me that it would over pressurize the fuel system, but that doesnt make any sense because you arent increasing the voltage tot he fuel pump causing it to pump longer or harder etc.???

Please help and gimme a loist of pro/con.

TIA!

 

all you need is a adj. fpr to keep pressure at stock levels

 

Would having just the fuel pump hurt anything? Would it make you run rich?

I dont understand how adding the new pump without telling the ecu to send more fuel is causing there to be more pressure in the rail...

 

Yup, the bigger pump will flow more fuel and raise the pressure slightly, so you will need something to tune it back down, like an adj. FPR or a VAFC.

 

fpr wont do much to lower the pressure. Some people complain that even if you loosen the screw all the way, the pressure stays high w/ a walbro.

I would wait until you are ready to go turbo before upgrading.

 

Would it hurt anything to drive it around for like a month or so (with the pum installed) without any tuning etc.?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SilverCIVIC96 &raquo;</TD></TR><TR><TD CLASS="quote">fpr wont do much to lower the pressure. Some people complain that even if you loosen the screw all the way, the pressure stays high w/ a walbro.
</TD></TR></TABLE>

That's only if you use a little crap FPR like the B&M. Use a good one, like an Aeromotive, and you won't have that problem.

 

If you have hondata and tune the car, would you still need a FPR ?

 

Within certain limits, no. You'll just keep the injectors open less using the engine management.

Can I ask a question? If I upgrade my DX fuel pump to a GSR, since my DX pump is going bad and I plan to turbo in the future, will that make the car run rich, or will the ECU be able to compensate enough to keep it stoich?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B16CRXT &raquo;</TD></TR><TR><TD CLASS="quote">Would it hurt anything to drive it around for like a month or so (with the pum installed) without any tuning etc.?</TD></TR></TABLE>

bump to answer my question please.

 

Yes, it will destroy your catalytic converter and your O2 sensor.

 

denso pump for me

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shaundrake &raquo;</TD></TR><TR><TD CLASS="quote">Yes, it will destroy your catalytic converter and your O2 sensor.</TD></TR></TABLE>

Is that all it will hurt? IF so, its not that big a deal, cuz a new o2 sensor will be installed with the setup for the a/f gauge and test pipe in place of cat. BTW: thanks for answering me.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shaundrake &raquo;</TD></TR><TR><TD CLASS="quote">Yes, it will destroy your catalytic converter and your O2 sensor.</TD></TR></TABLE>

How would that happen? I don't see the relationship. Could you please explain that a bit?

 

anyone?

 

Catalytic converters are destroyed by running rich. They can't handle too much fuel, they get real hot. Oil can also ruin a catalytic converter.

Running rich over an extended period of time can also destroy an O2 sensor. So does race gas.

They aren't related.

Why not just wait until you need the fuel pump before you install it? Installation of a fuel pump is easy and takes less than an hour. If you install it now, your car will lose power until you get enough air upgrades to be able to use the increased fuel. I'm not talking about I/H/E either. You're going to need at least a cam or forced induction.

Your other alternative is to get a fuel pressure regulator and reduce the fuel pressure back to spec.

 

The reason why i installed it now is because I don't have much time to install the turbo. I can't work on my car in my new apartment and I can't work on it at my friend's house for too long.

 

You can run on it no problem. Cyphear ran his for a couple months before we put his turbo on. (stupid delays) and he was fine. And who cares about the cat. If your doing it right, your going to get a larger exhaust and cat.
And walbro's only add 2-3 psi of pressure. Not much of a diff. We never bothered using anything to adjust.
However, i recommend you do it closer to the time of install. If you get all the b.s. stuff out of the way before the initial install there will be fewer things to slow you down when your installing the turbo.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tegmech &raquo;</TD></TR><TR><TD CLASS="quote"> If you get all the b.s. stuff out of the way before the initial install there will be fewer things to slow you down when your installing the turbo.</TD></TR></TABLE>

This is what we were thinking.

 

I guess no one uses fuel pressure regulators anyome.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tegmech &raquo;</TD></TR><TR><TD CLASS="quote">And walbro's only add 2-3 psi of pressure. Not much of a diff. We never bothered using anything to adjust. </TD></TR></TABLE>

its not pressure its volume, the stock FPR cant regulate the amunt of fuel a 255 LPH pump flows

it takes 30 minuets to install one, just wait to do it at the right time.

 

What are some good FPRs out there and which ones are best for their price?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RNPoo7 &raquo;</TD></TR><TR><TD CLASS="quote">What are some good FPRs out there and which ones are best for their price?</TD></TR></TABLE>
bump

 

The best i've heard of was the Aeromotive unit.

 

where is a good place to find these cheap?