Best upgraded fuel pump?
 

I am sure this has been discussed many times before but I am unable to use the forum search function with this HP tablet I am using right now, so bare with me please! Lol!

I had a Walbro fuel pump previously but it had rusted apart from non-use (my car has been sitting for 10 years). When putting it my new engine in this past spring, my mechanic put what he said was an FD pump, probably a JDM pump (part number Denso 195130-0782). I am changing my gas tank right now and bought a nice clean used one last week. While removing the fuel pump from the used tank I saw that it looked brand new! It is extremely clean and looks really new, no corrosion on the bolts or anything. The part number is Denso 195130-0271-3h. Is this a stock T2 pump? I have read many places and heard from variou people that the supra pump is probably the best drop-in pump upgrade, part number Denso 195130-1020. Is this right? While browsing for these pumps online I came across some Kyosan brand pumps that are supposed to be the same, for $140-$150 shipped. The pictures online whether on eBay or other sites all show the model number grinded off...which I find disturbing obviously. Can anyone offer some much needed info because I don't know whether to just stick with this FD pump (which looks rather used compared to the other nice clean one) or buy the supra pump. I have plans to achieve over 300hp if that helps at all. Thanks for any help!

depends on the setup of the car, the stock TII pump is good for about 250whp, FD pump 300whp, walbro about 400whp and supra slightly higher than the walbro.

if the car is stock and the TII pump is working fine then there isn't much need to upgrade the fuel pump.

The car is not stock presently and i have plans to upgrade the turbo to a BNR stage 4, bigger injectors, ECU, etc, etc.. Minimum 300 HP, probably closer to 350 I am hoping so I want a decent pump.

then get a real denso supra pump, you can find them new for about $175 with a little digging.

do your plans even remotely include E85?

No E85 as it is not really available in Canada, at least where I live.

good, because the supra pump runs out of steam at 350hp, I had that problem and now give the advice to people to think ahead of they are even thinking about switching fuels

it should push more than that, problem is most tuners don't advance the timing enough to truly take advantage of the ethanol.

everything I have ever been told is that the supra pump is good for 500hp, so minus 30% puts you right around 350hp which is where I started to lose fuel pressure when I was on the dyno, it might have been like 360, but regardless it was maxed out and no longer safe

retarded timing = power and mileage loss, that is what i meant.

compared to regular fuel where you might say be at 15 degrees of advance, you can usually run as far as 25 degrees of advance or further on E85.

yes you won't get as far but that still seems like a low figure comparatively speaking taking into account the differences in the fuel. the figures won't be night and day comparatively but it should net more than that unless the pump voltage was below average.

do you agree that e85 requires aprox 30% more fuel?
then anything rated for 500hp pump gas would be about 350, not exact figures but if your plans are to run in the 400hp range on e85 a supra pump will not cut it, neither will 1600 injectors which I found out also, lol

Ok, so what i understand is that i would be better off with the Denso Supra pump than my FD pump or a Walbro, right? And what about these Kyosan pumps I see around? Anybody have any experience with them? Where can I find a Denso Supra pump for a reasonable price new?

350hp a fd pump is fine if you already have one now

FD pump, Supra TT pump or a Bosch 044 are my personal favorites.

The only place I've found these Supra TT pumps so far is on rx7store.net for $210...anywhere else?

I'm using the aeromotive stealth 340lph drop in pump. A little cheaper than the denso TT with higher flow ratings.

was about to throw that one out there as it seems to be the newest replacement to the supra tt pump and costs less.

Yes I saw the Aeromotive Stealth pump as well but nobody seemed to be talking about it.

yeah i got that pump the Aromotive it dropes in good and fflows have not ran out fo fuel yet had it for 2 months so cannot speak on longevity but it looks like it is a quality build only time will tell

Hybrid

no love for the walboro? Those should be cheaper and flow about the same as a supra pump (255lph)

I have a venom 255lph pump, and despite the bad press venom has gotten, mine works fine and it was only $100. I was running 240 confirmed hp, but my tuner said he saw no reason why my setup couldn't achieve 300 or even 350 with the same fuel setup.

I have seen too many walbros fail or start to degrade in a short period of time to recommend them.

walbros are also very noisey.

walbro 255 litres per hour $110
supra TT 290 litres per hour $179
Bosch 044 ext. 300 litres per hour $220
aeromotive stealth 340 litres per hour $165


question most are wondering is how reliable the stealth pump is, as it's new to the market.

walbro's are too loud and i have seen a lot of people have issues with them. i have also had one die on me. i'm now using a supra pump and it's great

Only problem w/the supra pump is its an amp HOG! And flow drops off significantly if it doesn't get all the amps its looking for. You could run dual walbros and probably use less amperage.

i used to have a walbro they never failed me until a few months ago 2 of them actually...if you running big injectors and over 300hp you might want to think twice....its not worth living with the dam whine....too many better and affordable options out there

i cant believe guys who modify rx7s are talking about how loud a fuel pump is, lol

when a simple in tank fuel pump overrides your 3" single exhaust then i think that speaks for itself.

i can tell you that the supra pump is very quiet, even the bosch 044 pump is not that loud inside the tank, definitely no where near as loud as the exhaust

I take it back, Venom pisses me off.

I was driving to work and my car suddenly died. it would re-start every few tries and then die again after about 30 seconds. I suspected my fuel pump died.
So, in 37 degree weather at night in a Walgreens parking lot (which was across the street from where my car died, I was able to limp it there in 30 second bursts which pissed off everybody around me in rush hour traffic...) I opened up my fuel tank only to find that the pump appears to be fine.
What happened? the ground wire INSIDE the tank fell out of its crimp so it was just brushing against the contact. This is why my car could restart but then the pump wouldn't be able to keep up the pressure and it would die again.
So I threw the stock pump back in and drove home. Lucky for me I can fix this problem for free, but for the record... Venom makes crappy products that will fall apart after less than 4k miles. I should probably get a different pump instead... but money is tight right now, so this will have to do.

Also, for the record I made 280RWHP with that pump, and when paired with 1000/1000cc injectors, that is supposed to be good for up to 400RWHP

Rob is right, i have a 044 in my car you can only hear it prime after you start the car you cant hear anything over the exhaust. I had a walbro which failed on me and went for the 044 has been a fantastic pump and strongly recommend it. It was a bit of fun getting it in the tank though but it is a beast.

Like a few of the guys have said if you arent after mega power an FD or supra pump are the way to go and they are realible unlike walbro. The only reason i went for an 044 was i was aiming to hit 360KW + and i dont think a FD pump can support that power not sure about the supra pump though, toyota do over build their cars from the factory.

I have had my Walbro for about four or so years now, but only roughly 6,000 miles on it. It has been running just fine for my ~322 RWHP set-up. I believe I'll try the Bosch 044 later on, when I need a different fuel pump.

I used Deatschwerks 300+ LPH High Flow In-Tank Fuel Pump in my 2g dsm it was awesome super quiet and pressure was always there. The price is not too bad either at $169.00


•Flows 300+ litres per hour
• In-tank application specific fitment ( none for the rx7's you will have to use universal)
• Ethanol compatible
• 3-year no-fault warranty
• Quiet and reliable turbine impeller (almost like stock)




http://www.deatschwerks.com/products...tank-fuel-pump

i actually ran one of their pumps in my car until recently when it would randomly shut off and only restart after letting the car sit for at least 15 minutes. the pump was sounding like it was running but had a higher pitched tone, apparently it was running but i wasn't getting any fuel pressure.

somehow the pumps manage to hydrolock.

i pitched that piece of shit onto my shelf until i can look at it further or use it possibly for my injection test stand. it did produce the flow it stated as i tossed in my spare walbro and didn't affect the tune at all.

i will say it did last about 30k miles though. course the walbro i put in had 30k on it before i threw it in the venom pump's place... no issues so far. will run it for a while until i do the twin pump setup for the twin charger or switch to E85. the venom pump won't ever go back into a car.

aeromotive stealth one of the best pumps out now and its really cheap and small, Had a new Bosch 044 and walboro before but none of them worked good as the aeromotive stealth

is it the best because it flows or the best because it's reliable? it's only been out a few months, hence the real point of this thread.

i'm not 100% convinced it's durable, yet, even if it does flow the rated volume.

I have buddies who have been running the same 044 pumps for over 5 years

i'd be interested in understanding why you rate the Stealth 340 better than the Bosch 044, (besides the fact that the 044 is not designed for in-tank installation).

how are you rating these things? What do you mean by they didnt work as good as the aeromotive?

For what it's worth, I've been running a Walbro in my S4 TurboVert for 6+ years. Running a little over 200 whp, never a hint of a problem. But if I did replace it, Denso would be my choice as higher HP is in the S4's near future.

ive been running a walboro for 10 years now, no problem
other than flooding

i think a walbro in a stockish car will probably last forever

once you start pushing more power thats when it seems the shit hits the fan and a pump's reliability gets tested

I made 376rwhp at 14psi with a supra pump.

If I take the sheet provided by Deatschwerks their pump flows the following at 13.5V.
- 70psi 250 L/H
- 80psi 230 L/H
- 90psi 205 L/H

If I take the data generated by RC Engineering for the FullBlown dual unmodified Walbro's at 13.5V.
Official Dual Walbro Flow Test
- 70psi 375 L/H
- 80psi 300 L/H
- 90psi 234 L/H


Aeromotive 340 Stealth Fuel Pump at 13.5V.
Aeromotive Stealth Pump
- 70psi ~260 L/H
- 80psi ~227 L/H
- 90psi ~205 L/H

Bosch 044 Test from Jay Racing
-30psi ~290 L/H
-75psi ~267 L/H
-90psi ~253 L/H

Single Walbro test from Jay Racing
-30psi ~256 L/H
-75psi ~208 L/H
-90psi ~156 L/H


Hope this helps some people.:nod:

the walbro i mentioned was in a 450whp daily with a kenney belle boosting the voltage up to 20 volts. he switched to the supra pump for 500whp and gave it to me, it had ~30k on it, still works fine. so i don't think walbros are total crap, but they are quite noisey and draw alot of amps stressing the wiring.

it did however burn up the series 5 tank plastic bulkhead connector though, i installed a series 4 pump body into his series 5 tank, a little modified to lower the pump the right amount and swapped level senders. the series 4 pump body wiring is the most superior of all series including FD.

I had 400hp, pump is supposed to be good for 500 on pump gas, its quiet too.

Use a deatchswerks pump. Quiet and very powerful. Its and in-tank. I honestly prefer it over an aeromotive because you can actually use this pump everyday.

Why cant the aeromotive 340lph be used everyday.... would it make the car ultra rich and difficult to tune the idle?..

just to add areomotive stealth failed as well, it just died just never to power on again dunno why.

as long as you have a good regulator it wont make it rich or difficult to tune,
lol who really drives their rx7"s these days anyway

walboro 255

get a meter that senses your fuel pump voltage as well!

youll blow the motor if it ever fails