Jump to content
SAU Community

Recommended Posts

Can anyone give me information, pro and con's about these three different types of Fuel Pressure Regualtors?

Do they all do the same job as well as each other?

The nismo item looks like the stock reg, but with a screw on top, where as the malpassi and sard are more solid, robust units. Would this affect their performance?

I''m just a little confused with these products.

Cheers

Dave :headspin:

Link to comment
https://www.sau.com.au/forums/topic/46722-malpassi-vs-sard-vs-nismo/
Share on other sites

I queried between sard and malpassi at gavin woods and his response to malpassi involved some fairly heavy language which I possibly shouldnt repeat in polite company. It wasnt a positive response, put it that way.

I dont actually remember what brand he did reccomended over all, but I know sard was a name that cropped up as a "good" one.

ok thats a technical response slapper... but WHY??

is it because its not a jap brand... is it because it costs 1/3 the price of the Sard?

Gavins reasoning (minus most of the more colourful words) was that the malpassi couldnt maintain its set pressure between full boost and idle, especially after a hard run then quick back off. You would see the malpassi holding full boost fuel reg pressure even at idle, or vice versa (ouch!)

Also the build quality was "shit" and "typical of italian crap" and "I wouldnt even throw one on at my worst enemy". ... Thats not entirely verbatim :)

lol nice.

well thats the sort of info i want. I do know that the malpassi's work as i've used one on a previous car with no drama's, but i just want to justify the $300 odd for a sard or nismo item.

Cheers krawler

thats my other query.

The nismo's look like the stock fuel reg, but with a screw on top (the one i owned did anyway)

How do they go at controlling boost? are they rising rate etc? Their small design makes me abit wary of them...

Look at the nismo one that bolts on. It looks like stock.

All it does is restrict fuel on the return.. how can a different brand really have that much difference?

Skyline-Dave. How can it control boost..? And unless you running enough fuel for 4000HP I can see the small size hurting?

And I would say the Nismo one is all you need.. they have been proven to work. Rising Rate is not always a good thing.. you should use tuning to get the fuel right.

Can anyone give me information, pro and con's about these three different types of Fuel Pressure Regualtors?

Do they all do the same job as well as each other?

The nismo item looks like the stock reg, but with a screw on top, where as the malpassi and sard are more solid, robust units. Would this affect their performance?

I''m just a little confused with these products.

Cheers

Dave  :headspin:

Dave;

I've heard only good things about SARD, and Nismo aren't known for making junk. That said, make sure you need one before you spend the $.

yeah i've got a bigger fuel pump, and injectors will be >660cc i have decided.

I want to make sure i am going to be completed protected on the fuel side of things. Hence asking all the questions. Alot of money is going into My RB30DET and the GT35R will be wound up in boost pressure.. so i want make sure i'll have adequete fueling.

^rising pressure reg. are usually 'band aid' fixes people use to flow a little more then what there injectors can handle with normal fuel pressure... and as most band aid fixed its best to do the job proper and just get bigger injectors

ive also heard similar bad things about the malpassi, and have been recommended the sard over it, reason given was that the malpassi cant hold a steady fuel rail pressure, and well if that is the case, then its a pretty pathetic product really isnt it

yeah i've got a bigger fuel pump, and injectors will be >660cc i have decided.

I want to make sure i am going to be completed protected on the fuel side of things. Hence asking all the questions. Alot of money is going into My RB30DET and the GT35R will be wound up in boost pressure.. so i want make sure i'll have adequete fueling.

i recommend you not even go with the fuel regulator, run stock fuel pressure, and run bigger injectors if your running out of fuel, IMO, if your increasing fuel rail pressure to make up for lack of fuel, then your injectors are too close to 100% duty cycle anyways, and again in that case its a safer option to go with bigger injectors, if you want to be safe, which you say you do

pushing the injectors too hard will increase the chance of something going wrong, your spray patterns are also affected when you push the pressure too high

You can also push some more current through the pump to raise the static pressure....

I think.,

mmm i doubt it will, unless you have a shitty regulator, the pressure is simply a result of the restriction from the pressure regulator and it should accomodate for any extra flow and keep its pressure consistent, although its a common DIY trick to upgrade the wiring to your fuel pump, so you get less voltage drop + more current to the pump, which increases its FLOW, not pressure

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

    • The speedo's can be very conservative, when my Mazda NC MX5 speedo is showing 118kph, the GPS, and a calibrated radar.... cop mate.....hits me at around 110kph +/- 1 or 2 kph, and that is on a 215/45 17, stock tyres size is 205/45 17 as well, so weirdly conservative with stock tyre size When my Commodore speedo red 116kph GPS had me at 110kph After doing some offset and clearance measurements to see what can fit the NC on 17x8 +40, without guard rolling or rubbing anything at my current ride height, I've decided that when my tyres are toast, I'm going to fit 225/45 17 and see where that gets me IRT actual speed of my speedo and GPS/radar From the online calculator I should be still be doing around 5kph under an actual 110kph when the speedo is showing 110kph My ADHD requires that when I'm doing 110kph on the speedo, that the actual road speed is actually really close to that, and not alot slower And going from 205 to 225 still keeps the car within the %/mm allowable in the NSW vehicle rules and regulations, which is nice, as long as I'm looking at the latest version that is.....LOL https://www.nsw.gov.au/sites/default/files/2021-02/RMS-13.464-Light-vehicle-modifications-Vehicle-Standards-Information-No-6-November-2013.pdf
    • Take the value it measured as, and pick the closest range available that is above the reading on the screen.   Also, no point just testing the coils. Read what has been said again. You need to test all your wiring, everything.
    • Does the scanner do all the CUs in the car, or only the ECU?
    • @666DAN sorry to bring you and old thread.     I've got my de+t done and it's all running great other than 1 small issue.    Car has remained auto with the na auto and tcm, I've used a stagea ecu with. NIstune board and everything is great other than my gear selection on the dash. It illuminates park, reverse, neutral, 3rd and 2nd when selected . But nothing when in  drive or what gear your in when you pop it into tiptronic. I'm sure there is maybe 1 wire in the ecu plug I need to move to rectify this. Do ya have any ideas?     Cheers man
    • Well I recently changed my rear axles and was thinking if I bumped anything, I have been driving the car for a while now though... But it has been raining today so everything is wet under the wheel arches. Brakes feel fine and can't hear any of the metal screamers, I had a squeak coming from one of the handbrake drums but that seems to have gone away a while ago. I was going down a hill when it lit up and I did feel the abs bite for a second and question why it did it?
×
×
  • Create New...