Fuel Pump Upgrade
Let me know how it goes! Sorry I missed your calls bro Ill call you today 
Feb 8, 2004, 12:06 PM
#35
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https://www.evolutionm.net/forums/sh...that+fuel+pump 
BTW I just saw the April issue of turbo magazine which had a fuel pump comparison test, it included a couple of slightly different versions of the Walboro and a stock EVO 8 pump. Very favorable results for the Walboro, and a possible explination for the issues we are seeing at higher boost/fuel pressure levels with the stock pump.
BTW I just saw the April issue of turbo magazine which had a fuel pump comparison test, it included a couple of slightly different versions of the Walboro and a stock EVO 8 pump. Very favorable results for the Walboro, and a possible explination for the issues we are seeing at higher boost/fuel pressure levels with the stock pump.
Feb 13, 2004, 06:24 AM
#36
A mechanic at RRE suggested that the 255Walbro could make our evo run more rich and would have to be compesated for in tuning. They weren't so sure we even needed it. Please chime in with your comments on this. I bought one from them anyway but am not going to install it until I figure out if I can put a little "brown bread" soundproofing material around it to minimize its sound. I know it isn't loud, but I don't want to hear it at all if not necessary.
Feb 13, 2004, 06:39 AM
#37
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Originally posted by Smogrunner
A mechanic at RRE suggested that the 255Walbro could make our evo run more rich and would have to be compesated for in tuning. They weren't so sure we even needed it. Please chime in with your comments on this. I bought one from them anyway but am not going to install it until I figure out if I can put a little "brown bread" soundproofing material around it to minimize its sound. I know it isn't loud, but I don't want to hear it at all if not necessary.
A mechanic at RRE suggested that the 255Walbro could make our evo run more rich and would have to be compesated for in tuning. They weren't so sure we even needed it. Please chime in with your comments on this. I bought one from them anyway but am not going to install it until I figure out if I can put a little "brown bread" soundproofing material around it to minimize its sound. I know it isn't loud, but I don't want to hear it at all if not necessary.
I have used the walbros before and They work well and even support over 400hp. But to me reliablty and nosie is always in the back of my mind. The PE Pump is rated at 210 were the walbro is 255. 210lp is enough for my needs at the moment and just because it's made by Denso makes it more appeling to me.
The 93-96 RX7 pump is a bolt in and is rated at 210 I I think it's the same one sold buy PE relabiled. I will confirm and report back.
Eric
Feb 13, 2004, 06:57 AM
#39
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Originally posted by ShapeGSX
From what I understand, Walbro pumps are noisy because they use metal gears instead of plastic.
I've had a Walbro 255 in my car for the past 5 years without even a hint of a problem.
From what I understand, Walbro pumps are noisy because they use metal gears instead of plastic.
I've had a Walbro 255 in my car for the past 5 years without even a hint of a problem.
Feb 13, 2004, 10:54 AM
#40
Originally posted by Eric Lyublinsky
The only reason you might need tuning for a fuel pump is because the injector does not get filled with fuel. With a high flow pump the injectors have constent pressure on like the stock pump that can's support the injector one time at higher horse power levels.
Eric
The only reason you might need tuning for a fuel pump is because the injector does not get filled with fuel. With a high flow pump the injectors have constent pressure on like the stock pump that can's support the injector one time at higher horse power levels.
Eric
Feb 13, 2004, 10:58 AM
#41
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Originally posted by Smogrunner
Dumb question probably, but might the Walbro 255 fill the injectors and put more pressure on them to spray more fuel than stock, making the A/F more rich???
Dumb question probably, but might the Walbro 255 fill the injectors and put more pressure on them to spray more fuel than stock, making the A/F more rich???
Eric
Feb 14, 2004, 09:50 PM
#43
Yeah, **** is going wrong. It is one hour later and the stock fuel pump has a little baggy filter on the bottom of it and my walbro doesn't. The directions I am using talk about a "kit." I just have the pump. I'm trying to figure out if the OEM filter baggy will fit on the walbro but if not I don't want to break my stock one trying. ****.
Feb 15, 2004, 06:40 AM
#45
Originally posted by ShapeGSX
The stock filter sock will not fit the walbro. You need the walbro kit for your car.
The stock filter sock will not fit the walbro. You need the walbro kit for your car.
The only problem I see with with the rubber spacer that goes on the bottom of the pump. The stock and walbro kit uses different size. It's like a rubber cap but it keep the pump from sliding down with might disconnect the feed hose out if it's not there.
For some reason my kit came with an oversized filter and no rubber gormett. I've called and they send me the correct small filter with the rubber gromett piece for the plastic casing. Now i'm just debating if i sould use those correct parts.