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Old 10-19-2000, 08:54 PM   #1
ChAi
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Member#: 1277
Join Date: Apr 2000
Chapter/Region: NWIC
Location: issaquah, WA
Vehicle:
1999 Minnam Stage 2
Cobb Stage3 engine, TEC3

Post best setting on a Field SFC Hyper R

i seem to run way too reach on it any one know what is the best setting on a Field SFC Hyper R for stage II turbo with 8~9psi of boost?

OR what is your setting on it.

thank
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Old 10-19-2000, 11:49 PM   #2
Keiho
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Post

What year is your car first?

I have a MY00 NA so my settings won't be able to help you since you're turbo'd. But it would help others to help you.
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Old 10-20-2000, 01:05 AM   #3
Omensan
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Exclamation

Need to be FAR more specific..

For ex - you have changed fuel pump? I put on the Holley 255lph pump, and all of a sudden, fuel pressure has been bumped overall about 2 (Field SFC) points, I also have a 4:1 fuel:boost pressure riser, and that too figures in. Which intake? K&N, GReddy Airinx, stock, etc? Using anything to adjust timing? What settings on that? :-)

I'm running ~44psi WOT, 0 lbs boost, ~70psi @ 6.2 lbs boost (NICE and GENTLE.. i like my rings the way they are) and settings as follows, and ALWAYS 92-95 oct gas.

RPM - Fuel Timing
---- ---- -----------------
1000 - -1 +11 (800 rpm)
2000 - 0 +6 (2400 rpm)
3000 - 0
4000 - +1 +5 (4000 rpm)
5000 - +3
6000 - +4 -1 (5600 rpm)
7000 - +5 -5 (7200 rpm)
8000 - +5

Take these figures with a BIG grain of salt. This is based on a (first-flight) DOHC '98 RS with original MAF, and a Mavtech Safeguard (just in case the air is JUST dense enough to encourage a ping or two...)

This seems to provide a good, even, smooooth increase in power (despite the darn T03/04 boost curve).

Good luck, and if you blow a motor, don't blame me. If anyone has any constructive suggestions, I'm open for them too! (I know, I should replace the ECU with a custom-programmable and all, but i'm not that rich right now.)

-JCS, San Diego, CA
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Old 10-20-2000, 11:18 PM   #4
ChAi
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1999 Minnam Stage 2
Cobb Stage3 engine, TEC3

Post

i have 99 impreza 2.5RS

i have a question for you Omensan. i have a 2.2L WRX turbo fuel pump. WRX owner assume that it can pump up to 2~4 bar(28~56 psi)of pressure. I don't think they know the pressure of the pump very well.
i don't want to install it coz i don't have a fuel pressure riser/REGULATORS , and i don't want too much pressure in the fuel line.

what should i do install it with out REGULATOR?
is it going to pump to much pressure?
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Old 10-21-2000, 11:54 PM   #5
Omensan
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Post

the stock RS pump is a 155lph model, max (real flow) pressure in the 70's psi, the replacement I bought is a 'size identical, harness identical' from Holley, 255lph in the 80's psi

max pressure for both pumps is well over 100psi, but the flow significantly drops past 95 or so.

the regulator on the RS is on the fuel rail, a simple system, you don't need to worry about the pump you put in. Shiv Pathak put in one from a Mazda RX-7 (VERY high flow..) and his WOT (0 lbs boost) pressure went from 42psi (stock) to 45 psi (whoopie!)

the big difference --> the stock regulator is a 1:1 pressure riser, i.e. hooked up to the intake vaccuum (boost), it gives 1 psi per one psi of boost... WAY inadequate for those of us running boosted 2.5's on the stock 320cc injectors. (so i've been told..)

i also put in a 4:1 'rising rate' regulator.. it is passive until it sees boost in the intake, then starts a 4psi per pound of boost pressure increase (by throttling the output of the stock regulator). it's a much more inexpensive solution (albiet somewhat jerryrigging...) than buying a whole pressure regulating setup to replace your stock system in it's entirety.

at 4:1, it REALLY goes rich under boost, which is good. if it's really too rich, i use the AFC to tone it down a notch or two, but it's really not necessary. runs fine, no rich-smelling exhaust, no smoke, nuthin. seems pretty well tuned as is. You can get any spring rate you want (up to 15:1 i think) for the downstream-regulator, that would be a little too rich for me ;-)

AS FOR the '99 rs, i'm told that due to small differences in the MAF and ECU, that the turbos tend to run a little leaner, and some folks even recommend an 'additional injector setup' to make up for it.. i'm not sure it's necessary with proper fuel pressure management (bearing in mind that most injectors won't function above 95psi or so).. I'd think that you would be safe with the bigger pump, and a downstream rising-rate regulator/restrictor.

FOR NOW, with the stock pump, even with an intercooler, i'd not be running more than 5.0 psi of boost... you're badly risking detonation :-) (yes, i've lost rings already...)

The pump changeout takes less than an hour with a single screwdriver, It's worth the effort for the added pressure of even a wrx pump :-)

---JCS
San Diego, CA
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Old 01-19-2004, 05:36 PM   #6
Kevin Thomas
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1989 1989 XT6

Question Oldy

Yeah, this is old as hell but I have a question about it.

Those of you that have this on an N/A Subaru, could you please tell me what your settings are?

I'm specifically talking about the 'Car Type Setting Switch(#s 1-8), and the 'Speed Switch' (#s 1-4) on the back of the unit. I plan on installing it but want to get it right the first time.

The only two switches I have set to 'ON' are #2 in the 'Car Type setting' and #4 in the 'Speed Switch' setting. Thanks!
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Old 06-10-2011, 02:57 PM   #7
jay_parot
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WHITE

Question

hey man i have same thing but never installed cuz i dont have the wiring diagram , would you please send it to me , like what color wire goes to what i have thee ECU pinout just need the sfc hyper r wiring diagram my car has MAP and is turbo and also i need to use the feature to eliminate the speed limiter
thanks so much
my e mail is : jayparot@hotmail.com
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Old 06-10-2011, 03:33 PM   #8
Rudgers73
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Default

this is in the incorrect forum.



Admin please move.
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Old 06-10-2011, 03:34 PM   #9
jay_parot
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Question

Quote:
Originally Posted by Rudgers73 View Post
this is in the incorrect forum.



Admin please move.
so where should i ask for ????
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Old 06-10-2011, 04:54 PM   #10
awdorgtfo
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rs25.com
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Old 06-10-2011, 05:00 PM   #11
GrundleJuice
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Or the engine management forum
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Old 06-10-2011, 05:09 PM   #12
jay_parot
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Default

i did no one answer and here you guys whjere talking about it so thats why i ask .....
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Old 06-10-2011, 09:49 PM   #13
Rudgers73
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Ok, I'll allow it. But if an admin catches us we're all dead!
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Old 06-11-2011, 10:25 AM   #14
GrundleJuice
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I heard that once a Moderator killed a member for calling them an Admin.
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Old 06-11-2011, 10:43 AM   #15
Patrick Olsen
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I remember this one time, a thread was started in 2000, and then it was bumped 3-1/2 years later, and then it was bumped 7-1/2 years later, and in the meantime it had been put in the wrong forum when NASIOC was re-organized years ago.
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Old 06-11-2011, 11:16 PM   #16
jay_parot
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WHITE

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So I Ask Again Can You Please Give Me The Wiring Diagram I Need To Know What Wire Goes To What Fron The Field Please ????

Thanks Guys
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