what exactly does a check valve do? and where can i get one? you need one to moniter the boost fuel pressure right? TIA


"Proud to be, a 2gnt"


-mitsuman

Performance:
1. HRC STG 2
2. Greddy Power Extreme
exhaust
3. Blits Super Sound BOV
4. HKS Turbo timer

Ride:
1. motegi mr7 17'' wrapped
in yokohama A550v
235/45/17

Sound:
1. sony xplod cdxm620 deck
2. 2 10'' audiobahn subs
3. nice shiny audiobahn
amp

In room:
1. blitz front end(thnx 2
eclipse804)
2. H&R sport springs(thnx 2
eclipse804)

Fun mods:
1. "Nozzel mod"

Wanted:
1. to much ish to list... but a
boy can dream

-mitsuman 95 GS 5-spd w/97-99 front end
Repin The SoCal 2GNT'ers
mitsuman95@hotmail.com
AIM s/n : mitsuman95gs

A check valve allows air/fluid to flow one way, but not the other. I'm not exactly sure what your talking about how its used to moniter boost fuel pressure, but you use one on the HRC (Cartech) regulator to bleed of boost pressure at the regulator in order to adjust the proper WOT fuel pressure. The reason you use a check valve instead of leaving the barb open to the atmosphere is because when the car is in vacuum, you would have a leak at that spot.

Matt
1995 Eclipse GS
2.0L, S16g Turbo, 8 Injectors, 26psi

1998 Eclipse GSX
2.3L Stroker, AEM EMS Converted to Speed Density, FP3065 Turbo, 35psi , and so on...

well by boost fuel pressure i was asking you if i needed that to adjust and or messure fuel pressure when boosting. and where the hell can i get a check valve?


"Proud to be, a 2gnt"


-mitsuman

Performance:
1. HRC STG 2
2. Greddy Power Extreme
exhaust
3. Blits Super Sound BOV
4. HKS Turbo timer

Ride:
1. motegi mr7 17'' wrapped
in yokohama A550v
235/45/17

Sound:
1. sony xplod cdxm620 deck
2. 2 10'' audiobahn subs
3. nice shiny audiobahn
amp

In room:
1. blitz front end(thnx 2
eclipse804)
2. H&R sport springs(thnx 2
eclipse804)

Fun mods:
1. "Nozzel mod"

Wanted:
1. to much ish to list... but a
boy can dream

-mitsuman 95 GS 5-spd w/97-99 front end
Repin The SoCal 2GNT'ers
mitsuman95@hotmail.com
AIM s/n : mitsuman95gs

You need that check valve on no matter what or you can't adjust your base fuel pressure because your car will not be in vacuum due to that leak. You can get the same check valve that HRC sends out with their kit at NAPA. If you are confused about setting the fuel pressure, read the my post under "Running Lean... what to do." The check valve is installed on the barb right under where that brass knob is on the regulator. When you put it on, make sure you connect the end of the valve that you can blow through to the hose on the regulator since it is supposed to bleed air, but not let air in. The other end of the check valve is left open atm. Hope that answers yer Q.

Matt
1995 Eclipse GS
2.0L, S16g Turbo, 8 Injectors, 26psi

1998 Eclipse GSX
2.3L Stroker, AEM EMS Converted to Speed Density, FP3065 Turbo, 35psi , and so on...

cool thnx for the help. i was also wundering if maybe some auto parts store has them. like auto zone or pepboys. thnx for the info


"Proud to be, a 2gnt"


-mitsuman

Performance:
1. HRC STG 2
2. Greddy Power Extreme
exhaust
3. Blits Super Sound BOV
4. HKS Turbo timer

Ride:
1. motegi mr7 17'' wrapped
in yokohama A550v
235/45/17

Sound:
1. sony xplod cdxm620 deck
2. 2 10'' audiobahn subs
3. nice shiny audiobahn
amp

In room:
1. blitz front end(thnx 2
eclipse804)
2. H&R sport springs(thnx 2
eclipse804)

Fun mods:
1. "Nozzel mod"

Wanted:
1. to much ish to list... but a
boy can dream

-mitsuman 95 GS 5-spd w/97-99 front end
Repin The SoCal 2GNT'ers
mitsuman95@hotmail.com
AIM s/n : mitsuman95gs

NAPA is an auto store here in Michigan... I thought is was nation wide... huh. Anyway, yea one of those 2 stores should have it. It is 1/2 black and 1/2 white. It comes in a little package like the vacuum tees do. I found it at NAPA on one of their accessories shelves. I believe it is a GM part, but its been awhile so don't quote me on it unless I'm right

Matt
1995 Eclipse GS
2.0L, S16g Turbo, 8 Injectors, 26psi

1998 Eclipse GSX
2.3L Stroker, AEM EMS Converted to Speed Density, FP3065 Turbo, 35psi , and so on...

lol ok thnx

"Proud to be, a 2gnt"


-mitsuman

Performance:
1. HRC STG 2
2. Greddy Power Extreme
exhaust
3. Blits Super Sound BOV
4. HKS Turbo timer

Ride:
1. motegi mr7 17'' wrapped
in yokohama A550v
235/45/17

Sound:
1. sony xplod cdxm620 deck
2. 2 10'' audiobahn subs
3. nice shiny audiobahn
amp

In room:
1. blitz front end(thnx 2
eclipse804)
2. H&R sport springs(thnx 2
eclipse804)

Fun mods:
1. "Nozzel mod"

Wanted:
1. to much ish to list... but a
boy can dream

-mitsuman 95 GS 5-spd w/97-99 front end
Repin The SoCal 2GNT'ers
mitsuman95@hotmail.com
AIM s/n : mitsuman95gs

Correct me if I'm wrong, but can't you get away without using the check valve on the Cartech FPR if you have the brass needle valve all the way closed?

Anyways, if you can't find a checkvalve anywhere else, the ones made for fishtank airpumps would work in this application... $.99 at petco. And, yes we also have Napa autoparts in California.

well im order to set my boost fuel pressure i have to turn that brass one. if it doesnt have check valve then itl suck air in and ill have a vac leak. right? arent you the pne who told me this? it makes perfect sense cuz it sux in air when i adjust it cuz i can feel it and when i adjust it i see the idle pressure rise so im pretty sure that boost fuel pressure will rise also.


"Proud to be, a 2gnt"


-mitsuman

Performance:
1. HRC STG 2
2. Greddy Power Extreme
exhaust
3. Blits Super Sound BOV
4. HKS Turbo timer

Ride:
1. motegi mr7 17'' wrapped
in yokohama A550v
235/45/17

Sound:
1. sony xplod cdxm620 deck
2. 2 10'' audiobahn subs
3. nice shiny audiobahn
amp

In room:
1. blitz front end(thnx 2
eclipse804)
2. H&R sport springs(thnx 2
eclipse804)

Fun mods:
1. "Nozzel mod"

Wanted:
1. to much ish to list... but a
boy can dream

-mitsuman 95 GS 5-spd w/97-99 front end
Repin The SoCal 2GNT'ers
mitsuman95@hotmail.com
AIM s/n : mitsuman95gs

technically it would work if you closed the valve all the way, but then he would be running ~ 105psi of fuel pressure with only 5lb. of boost. Thats gonna give him worse gas milage, less power and possible even higher egt's if all that fuel isnt combusting in the cylinders. I'd say the $1.50 is worth the more accurate tune job.

Matt
1995 Eclipse GS
2.0L, S16g Turbo, 8 Injectors, 26psi

1998 Eclipse GSX
2.3L Stroker, AEM EMS Converted to Speed Density, FP3065 Turbo, 35psi , and so on...