Can a stock integra gsr fuel pump handle 5-7psi with a chipped ecu or do I have to get a walbro 255?

 

The dohc vtec fuel pumps are good for like 300whp..they flow almost double the amount of the non dohc vtec pumps..i think its like 79lph vs. 134lph

 

i also have that problem, i want to run oem pump rail and fpr, is it possible for a 10psi b16a2 to handle it with out switching to aftermarket pump??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95dc2teg &raquo;</TD></TR><TR><TD CLASS="quote">Can a stock integra gsr fuel pump handle 5-7psi with a chipped ecu or do I have to get a walbro 255?</TD></TR></TABLE>
no
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by *****skater &raquo;</TD></TR><TR><TD CLASS="quote">i also have that problem, i want to run oem pump rail and fpr, is it possible for a 10psi b16a2 to handle it with out switching to aftermarket pump??</TD></TR></TABLE>
no

 

no stock fuel pump cant handle it or no i dont need the walbro 255

 

Depending on your base pressure, injector size, duty cycle, desired air/fuel ratio, etc, you can get anywhere from 250-350hp with the stock pump. Personally, if you're targeting over 250 wheel hp, I recommend another pump.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95dc2teg &raquo;</TD></TR><TR><TD CLASS="quote">no stock fuel pump cant handle it or no i dont need the walbro 255</TD></TR></TABLE>

no to the stock pump... better safe than sorry. is cheaping out on a 100 dollar fuel pump better than rebuilding your whole motor??? thought so.

 

why would getting a 100 doller fuel pump make you rebuild your motor?

 

they're good for around 190hp

 

I've seen the stock 79lph pumps from regular Civics do over 200hp with stock 43psi fuel pressure. The stock dohc vtec models DO USE a stronger pump. I have a test sheet comparing a Holly (walbro) 255hp pump vs the dohc vtec pump, and it did in the 130's below 55psi IIRC.

The thing with fuel pumps in Hondas is that they are running full-bore all the time. At lower fuel usage, it's just bypassing more. Raising fuel pressure by 7psi will no stress the pump, and not lower it's overall output much at all.


That said, $100 for a pump is decent for piece of mind. I really wouldn't suggest a 255hp because of the noise. At that power level, you aren't using half what it offers. The 190lhp is much quieter, but can handle quite a lot of power. It also doesn't have some issues others have with the 255hp. Mine came with my car, and I believe it was installed 2 owners before me - which was before 2003 or so. I regularly take it below 1/8 a tank w/o any whining or anything from it, and it's daily driven.

 

I love the noise of a 255. you only really hear it when you first turn the ignition on though, its not like a ap1000.

also don't be a dink and cheap out on a fuel pump, trust me. had a motor go out because of leaning out :/

 

From the sounds of it, you want to turbo a car and run a basemap on it. Bad news

 

wow i started this thread A WHILE ago before i knew and learned anything lol. since then things have changed a bit. Although there is still good information to be had in this thread!

 

Yeah I was gonna say...His sig says power but hes asking a pretty elementary question lol

 

Lol, I was wondering too. I didn't see the date on this.


804tuned, thanks for bumping a 3-year old thread.