Jump to content
SAU Community

Recommended Posts

I think that is the same thing, just one is constant 0-5v while the other is a pulse 0-5v, I currently have a PWM controller controlling the Weldon from a PWM output from ECU, the next one will be the Fuelab electric FPR controlling the pump

I'm not sure on what input the pump takes though, weather it has to be constant 0-5v or if it can take a PWM signal

It was the pump itself I wanted to know about inparticularly the noise of it and how reliable it has been :thumbsup:

Pretty sure it needs to be a PWM, the regs have a pulsed output. Dropping dc power onto the pwm input just puts it in slow speed.

Don't run the Fuelab at full noise for more than 10 minutes, it won't like it at all, and using the existing pulse width controller you have will stuff it. Stick with the fuelab reg for best results, less tuning required too.

I'm going to use the matching Fuelab electric reg, even if I didnt why would someone use a PWM controller to run a pump that has one built in :/

I'd be worried if I couldn't run a pump at full noise for more then 10mins :(

Even my Weldon went for 1 1/2 hours at full noise on the dyno with out an issue, I realy like the Weldon just can not take the noise which is louder in the car then outside :(

On paper the Fuelab pump and reg looks the tits, I hope that will transfer into real life

  • 1 month later...
  • 1 month later...

Currently running 400kwatw on E 85 with a Bosch 044, looking for another 50kw atw but know the 044 must be close to maxed out. Will a walbro 450 in tank handle that ok, or are there better options, don't really want to lose more boot space to a surge tank as the car is my weekender. Running ID 1300's if that is any help. Any advice will be appreciated

Currently running 400kwatw on E 85 with a Bosch 044, looking for another 50kw atw but know the 044 must be close to maxed out. Will a walbro 450 in tank handle that ok, or are there better options, don't really want to lose more boot space to a surge tank as the car is my weekender. Running ID 1300's if that is any help. Any advice will be appreciated

Friend of mine made 460awkw on E85 at 26psi on his BNR34 with the walbro 460lph pump. Needed to be wired to get a full 14 volts though.

I am about to do the same thing in about 2 weeks.

Lowering the base pressure and getting full 14V to the pump will help with flow. Look into bumping the voltage even higher if you can, 18v would be great using a high current DC to DC converter, or even tapping power off the alternator before the regulator may work? Otherwise twins would be the go, or a large external.

Anyone used 2x walbro 255's?

I haven't heard of it but the amount of flow vs the current they draw is better than the 460 version from memory.

Scotty does.

Now the 460 is available there isn't much point. Works great if you can isolate one pump to run 3 cylinders, at least that way you will know if one fails.

460L walbro at 20v might flow near 600kw. Would be very interesting to see it's capabilities, but I suspect the inlet may cavitate. Large singles like the fuelabs recommend 10-12an inlet lines to counter the cavitation.

To flow that much on a stock looking fuel system would be crazy for those with stealth builds. Most can't believe what we are squeezing out of them already.

If they are flowing 450wkw at the moment at 13V and a high base pressure, what would it do at 20V, a lower base pressure and less boost on a large turbo? It's anyones guess but 600 at the wheels isn't a stretch, and that's on ethanol. On petrol... Who knows.

Question is, do you want to lean on one that hard, or just fit another 460 (or any other large external pump capable of pushing that flow continuously.) I imagine a surge tank is a requirement at that sort of power anyway.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Wideband is worth setting up if only for tuning purposes. I would not mess with the ignition system unless there's a misfire. HKS crank trigger is popular out here for the relatively easily sourced Denso crank sensor, not a bad idea to install as well regardless of power level on a standalone. Boost leak test is worth thinking about. Oil pressure sensor tied to a fuel cut isn't a bad idea either. Getting the tune figured out is a good idea. Without putting eyes on it and getting under it there's no way for us to tell you exactly what it needs but most likely you're down to the last 10% that will make a big, big difference in how happy you are with the car.
    • Doing a refresh of my 33 and can see a few websites stating they sell the entire main carpet for our cars, but they all have generic photos which is fine, i understand they are custom made to order.  Just seeing if anyone has got it done or had any experience with this, as i would only want to do it if the fit and finish was as good as oem https://carmatsdirect.com.au/products/moulded-carpet-or-vinyl-for-nissan-skyline-r33-1993-1998-coupe https://knoxautocarpets.com.au/moulded-carpets/nissan/skyline/skyline-r-33-1993-1998/
    • Any plans for E85? If so, add flex fuel sensor.   I'd probably add in the sensors I mentioned above if the Link will support using them for engine protection. With water pressure, you need to be able to effectively set it that "If temp > X, and pressure = atmospheric, shutdown" as at running temp, you should be able to read pressure in the cooling system. If pressure suddenly disappears, it means the water went some where, and this is a quicker reaction than waiting on water temp to go up (Which, can take a little longer than you'd like, considering it now has to wait for hot air to heat it up) Oil pressure, Oil temp, both would be on my list too if you're looking to add sensors. Wideband O2. And at least one EGT sensor. If you're feeling deluxe, put in individual runner EGTs. Single EGT sensor is more so forget about a specific number, get used to "What is normal EGTs", and then keep an eye on it, if it starts going away from "normal" it's a sign something is wrong (Also, things like the tune can still start going out of spec, but EGTs may not show it, for example one injector starts running leaning, so ECU richens everything up, now 5 out of 6 cylinders are rich, and running cool, with one cylinder lean and running hotter, so it's not perfect) Then there is your other things to look at non sensor related, but you may have already done, or have underway, and that would be things like building a sump for more oil, and better oil control under high G-Forces (Cornering, brakes, acceleration). Basically, the above is worth looking/thinking about, if the ECU can do protective stuff with it, and you continue to use it how you are (Drive it to the track, thrash it, drive home, repeat once every 3 to 4 months)
    • Can also confirm these work a treat for most balljoints and bushes. If you have access to a big rattle gun, they make the job so much easier and quicker, compared to using a socket wrench or shifter on the c-clamp 👍
    • Its sort of street but got used for circuit sprints on account of I never drive it on the road because I dont have the time to spare. So it usage was sits around for months at a time then gets driven either 50 or 250 kms to the track followed by 20 laps followed by 50 or 250kms home followed by stuck in the shed until next time. So yeah neither fish nor fowl. Just dont want to break it on the track as a preference. Hence the fairly short sensor/mod list. Probably more worried about it pinging itself to destruction more so than anything oil related.
×
×
  • Create New...