Ti Auto F90000295 Walbro 525 Fuel Pump Flow Test!

[@AbdullahHaidar]

Thank you very much for sharing those straight forward easy to understand videos, much appreciated.

[@lightblade543]

No prob!

[@correygoffney7054]

Dope video

[@TwinTurboRamAir]

Great video. Would a single Walbro 535 support as much power as dual walbro 255s ?

[@lightblade543]

Yup similar performance with slight edge to the F90000295.

[@TwinTurboRamAir]

@@lightblade543 that's good to hear because I run two walbro 255s now and would like to switch to just a single fuel pump.

[@BimmerMafia]

@@lightblade543 what’s difference between 285&295. The one on Amazon doesn’t say no check valve.

[@lightblade543]

@@BimmerMafia 285 has a checkvalve and flows 475lph at 40psi. 295 has no check outlet check valve and thus flows better 530lph at 40psi.

[@BimmerMafia]

@@lightblade543 40psi. My car will never see that. I need to be at constant 70psi. I went ahead and ordered the 525.

[@wickedsatan1]

Is there 525 variant which is in line instead of in tank? I'm thinking to use two AEM 50-1005 for my 4 2200cc injectors. What do you think about dual pumps?

[@lightblade543]

No just in tank. Obviously you want enough to do the job so sometimes requires 2 or 3 pumps depending on power level and fuel.

[@beerturbogarage]

4x2200cc injectors will flow 530 LPH at full noise.

[@anthonywheelus4845]

Have you tested a counterfeit knockoff of the the 525 from China?

[@BDauto86]

That's exactly what I was wandering. I would like to see data from the cheap knockoffs like the kemso 340, eBay knockoff 450 and 525s

[@HellTriX]

all this work to test it out and you dont even up the pressure to 50-60-70psi that the pump would have to run for boost pressures of 10-30 psi.

[@SK-qg1ln]

You think the 525 walbro is better than the DW400? Curious cause I have the dw400 installed on my scatpack build but I just ordered the 525

[@lightblade543]

Yes. Pulls less current and flows alot more. DCSS is still the best in tank pump technology on the market for performance application.

[@SK-qg1ln]

@@lightblade543 thanks for the info , I kinda felt like the DW400 isn’t doing the job . Installing the 525 walbro on Tuesday , see what the difference will be

[@dillonpartin10]

Have you seen the dw400 vs 525 test, above 70psi it flows less add pulls more amps than the dw400

[@lightblade543]

@@dillonpartin10 If your referring to the video DW posted a few years ago yes I've seen it.. Around 100psi the dw400 starts flowing more since the ti 285 pump internal relief valve starts opening at that psi. The bosch br540 (or dw400) relief valve doesn't start to open until north of 150psi. As for current believe you got that mixed up. The bosch/dw draws more. If you pull up some independent testing the current to flow ratio is pretty bad. The next down fall I've seen is the smaller motor armature generates more heat and has more cavitation or hot flow loss. So you would need to weigh the best option for your application. For a 40psi base fuel pressure you would need to be running up to 60psi of boost before you would see less performance on the ti pump. Also fyi this video is testing the 295 pump which flows around 50lph more than the 285 does.

[@dillonpartin10]

@@lightblade543 thank you, that's the kind of information I'm looking for. I'm running direct injection, pwm to a high pressure pump so not boost referenced but im still around 6 bar, looking to get all the volume I can for E85

[@StreetWagon713]

I wonder how many amps im pulling i have a walbro 450 with a boost a pump at 21volts

[@lightblade543]

I did test it at 17.5v in another video to simulate what a standard 18 v booster would put out. But I would never run one that high personally.

[@pcrsam]

How do you tell if a walbro 525 is a fake?

[@deltadetrix]

buy from a reputable dealer, if the price is too good to be true it probably is

[@MrBoomtheroom]

what the model number for the spektrum your using?

[@lightblade543]

SPMXC10201

[@pinklightfever]

Can we get a test on the Bosch 540 to compare with the F9000295? And possibly test both at 20psi intervals all the way to 80psi?

[@pinklightfever]

I personally run this exact pump (295). Above 28psi on my setup, fuel pressure does not keep up (47.5psi base, 1000cc Injector dynamics and 5/16 feed from the pump converted to 6AN about 2' back from the rails). I make just over 500whp with this setup. A local guy near me ran the Bosch 540 all the way to 620whp on the same car, same fuel line setup, same dyno, same gearbox (and same converter), same diff. I find it hard to believe that the Bosch 540 would flow sufficiently more fuel than the '295' at 80psi, and the only data I can find is radium's post which shows the opposite. I would love to see your data on this subject if you have a Bosch 540 you can test.

[@lightblade543]

I don't have one to test but if I get one I will. I would agree with you. At your base pressure plus boost level the 295 flows more when setup correctly. 5/16 line in the system is a restriction imo. That's smaller than the 10mm outlet barb ID. What fuel are you running and how is it wired. Wiring is often overlooked as well. It's hard to compare "setups" when it comes to potential as there are so many factors. Fuel filter health, a few tenths of a volt to full volt difference in alternator output, Climate and da, ring/compression health, tuned afr, vehicle weight, trans, gearing, iat's at boost level, compressor efficiencey. And many more factors that people don't think about. I have seen a 262 405lph pump make 625rwhp on one setup and another guy (almost identical mod build) max it at 540rwhp because of these "other" factors. So what you describe may not be a "pump" problem per say but one or more of the many other factors on your specific setup. I have gotten a car maxing the fuel system and done maintenance to the system and picked up another 100hp range. I guess the point is overall Fuel system performance is so much more stuff than just the pump and injectors.

[@pinklightfever]

@@lightblade543 I hear you. Since posting I actually swapped in a Bosch 540 and went back to the dyno. It does not flow as much as the '295' (fuel pressure nose diving at less boost than with the '295'). I also had my ID1000's cleaned and flow tested - they only flow 880cc. So I agree with you, in my case it is clearly a case of small injector, small fuel line, pressure drop at the rail compared to pump outlet. Fuel used was E90 and the pump is wired direct from the battery with 37a Tefzel wiring and 80a bulkheads through the tank lid (less than 0.1v differential from battery to pump during the run on the dyno). I am going to add a surge tank, move both pumps to inside the surge, use a high volume/low pressure feed and run new fuel lines (AN10) to the rail as well as add another fuel pressure sensor at the pump outlet to measure differential across the system. I was more just curious about the testing capabilities of the pump if you had one on hand, but appreciate the response all the same.

[@billetbarra6069]

good effort but a fairly useless test, you need to test it with about 80psi against it and see how it performs. This is a basic NA motor test and has no relevance to a turbo application

[@HellTriX]

My thoughts exactly. all this work to test it out and he dont even up the pressure to 50-60-70psi that the pump would have to run for boost pressures of 10-30 psi.

[@billetbarra6069]

@@HellTriX no one is buying this pump for an all motor / NA car. Useless test!