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Old 05-03-2002, 10:58 PM   #1
Hojai
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Default which is the best adj. fuel press. regulator?

SX, Paxton or Sard?
isn't that Sard has 2 models? sport and race?
what's the difference?
it doesn't matter if i get the 10-AN or the 6-AN right?
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Old 05-03-2002, 11:27 PM   #2
Hojai
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ok....
i have known the difference between the Sard race fuel regulator and the sport one.
But, i still need to know which is the best?
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Old 05-04-2002, 12:30 AM   #3
STiTuner
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why is vortech not mentioned?

Brad
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Old 05-04-2002, 12:46 AM   #4
Hojai
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b/c i am just looking for a regular adjustable fuel pressure regulator, i don't know if Vortech makes one.
isn't that Vortech only has rising rate fuel pressure regulator? both sfmu and fmu are the same right?
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Old 05-04-2002, 12:58 AM   #5
STiTuner
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the FMU and SFMU are different

the FMU has set plates

the SFMU comes with three different plates and screws to adjust idle vacum and boost

Brad
wonders who owns him now
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Old 05-04-2002, 01:16 AM   #6
kastle
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Vortech SFMU over @ Scoobymods.com
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Old 05-04-2002, 01:24 AM   #7
akcel
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you can now pick up my vortech sfmu here very low price compaired to the price from others
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Old 05-04-2002, 01:28 AM   #8
Hojai
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"The SFMU is the same as RRFPR" that's what scoobymods.com said
so SFMU is not the one i am looking for, i don't know about FMU.
Is FMU the same as RRFPR?
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Old 05-04-2002, 01:45 AM   #9
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Hojai, i have the SARD one from technik.. seems to work fine. Call Ross and ask. I think he has 1 with Subaru fittings in stock.
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Old 05-04-2002, 02:12 AM   #10
Hojai
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orbiter:
he'd told me already but i am just trying to find something cheaper and at the same time comparable to Sard
by the way, how much do you think the pressure gauge cost if i buy it from Mopac?
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Old 05-04-2002, 02:17 AM   #11
akcel
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i dont understand..lol...the sfmu is FULLY ADJUSTABLE...it is what you want it to be...oh well
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Old 05-04-2002, 03:14 AM   #12
Hojai
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but i don't need a rising rate one.
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Old 05-04-2002, 03:19 AM   #13
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the S-FMU is fully adjustable RRFPR

ok so if you don't have a RRFPR you will always have such high pressure and your car will not be able to learn the difference between on boost and off boost fast enough to control the injectors and your car will have suck!!!

Brad
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Old 05-04-2002, 03:26 AM   #14
Hojai
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but my tecII can handle that right?
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Old 05-04-2002, 09:01 PM   #15
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ok using enigine management like that brinks you do a different topic..

pretty much and FPR will work probably even a factory one if you have a pump and injectors to match it.

Brad
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Old 05-04-2002, 10:44 PM   #16
Hojai
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i've got RC 550cc injectors and Walbro fuel pump.
i've heard a lot of ppl are using stock SVX fuel pressure regulator to bring down the pressure to about 32psi right?
i don't know if i can do this. If i can, it will save me a lot of money.
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Old 05-05-2002, 12:11 AM   #17
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you have a Tec.. go talk to shiv... your life will become a whole lot easier.

Brad
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Old 05-05-2002, 02:33 PM   #18
Hojai
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thanks
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Old 05-05-2002, 04:17 PM   #19
AaronB
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Wow this thread seemed to get more difficult than it should have.

The Vortech SFMU is adjustable by swapping out the plates inside of the unit to allow different ratios of fuel pressure increases. It either comes with or you can order seperately the 1:1 plate which makes it just an adjustable FPR. If that is what you want you will have spent too much money on the Vortech IMHO as there are cheaper options. Cost around $300

Many including myself have/had high idle fuel pressures after swapping the pump for a hi-flow one. I swapped in a SVX fuel regulator for the stock one and it dropped me back down to around 33psi at idle. It is a simple bolt on procedure. Cost new around $100, used junkyard going rate...

If you have a full tec-II setup, you may want to consider Shiv's fuel rail kit which will convert the fuel rails to parallel, and replace the stock regulator with an included adjustable unit. Cost $400 - $500 (I forget how much he charges for these).

I can't recomend one option over another as I am not sure what you are looking to achieve.

Hope this helps.

Regards,

Aaron
http://www.AzScooby.com
http://www.ScoobyMods.com
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Old 05-05-2002, 06:06 PM   #20
Hojai
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actually i am not is that only the idle fuel pressure i have to lower?
i had emailed shiv but still waiting for his reply.
i think i will not go for Vortech b/c it's more expensive than others.
if i only have to lower the idle fuel pressure, i can just get the stock fuel regulator from SVX. If not i will have to get an adjustable fuel pressure regulator like Sard, SX or Paxton.
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