jeremyb

bump

jeremyb

buuuuuuuuuuuuuuuump =(

Boostn7

Walbro fuel pump (high press/255ltr) using stock wiring, rails and regulator will easily support ~450rwh. Higher I noticed it would slightly drop in FP but we're talking ~18psi+ with single T70. After it was wired to steady 14 volts from battery it maintained FP 'till 2x1200cc and 2x850cc were maxed out or ~ 500rwh.

the only Denso pump that flows equal or maybe a bit more and direct drop in is the Denso Supra(MKIV) pump. The Cosmo Denso pump falls between the stock FD one and Supra/Walbro.
The only issue with the MKIV pump is wiring it with more then 14 volts....they seem to fail quite rapidly.
My Walbro has been in my car for the last 30k miles and still feeding very close to 500rwh :-)

My .02
JD

RX7Wishing

So would the rx7store denso pump be a benificial upgrade?


**Our most popular fuel pump upgrade** Also known as the Supra TT pump.

The stock fuel pump was designed to handle the fuel requirements at near stock levels. Once you've upgraded the car to a point where more fuel is required, you'll need to address this weak link in the system. We use a special, high flow fuel pump, made by OE manufacturer NipponDenso in Japan, which exactly replaces the stock fuel pump. This unit takes less than 30 minutes to install, doesn't make any more noise, is extremely reliable, requires no cutting, welding, new lines, or anything else. It's also the highest flowing unit we've tested that doesn't make the car run rich at idle, unlike other "bolt ins".
The pump has been tested to support 500+ RWHP (at 36-40 PSI base pressure) and is a good upgrade for those with upgraded ECUs and/or those adding additional injectors.

jeremyb

Hey Boostn7, are you running rich at idle?

toylee

iTrader: (2)

http://cgi.ebay.com/ebaymotors/ws/eB...category=33555
is this same walbro pump you guys talking about???

Boostn7

<jeremyb :Hey Boostn7, are you running rich at idle? >

Well...with the OEM wiring the pump will only see ~9 volts @ idle and it might be slight richer....but with the PowerFC I'm able to adjust it.

jeremyb

Yes that is exactly the one. That pump vs. nippon denso fuel pump is what the discussion is about.

I plan on going with a stand alone or a piggyback with as detailed pragrams as possible. So if you are running fine at idle... then I think i may jsut go walbro.