GReddy Profec B... How Much Boost Can It Control?
11-11-2003, 08:54 PM
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GReddy Profec B... How Much Boost Can It Control?
Just wondering how high can it controll boost? I know it depends on the WG spring, but how high can it go on top of that? Right now, im running a Tial 46mm WG with a 10lb. spring and i cant seem to boost passed 17-18 psi? I've tried replacing my vacuum lines and tried different installation set-up, but still wont go passed 17-18 psi. Last resort i got is to up the spring to a 15 lb. but i dont want to do that right now, anyone got a solution?
11-11-2003, 09:38 PM
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Re: GReddy Profec B... How Much Boost Can It Control? (TurboDANDEE)
i think u have ur spring pretty much maxxed out, u can usually effectively double the rating of ur spring..but ur close
mike
mike
11-12-2003, 12:03 PM
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Re: (TurboDANDEE)
I saw somewhere that you can use an external pressure source with the innovative boost controller. I would think this would let you boost as much as you want to on any size spring. Check it out:
http://www.nlrsystems.com/pages/boost_con.html
http://www.nlrsystems.com/pages/boost_con.html
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11-12-2003, 02:01 PM
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Re: (Foozball26)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Foozball26 »</TD></TR><TR><TD CLASS="quote">it can control 14 lbs over the wastegate spring.</TD></TR></TABLE>
Is that with or with out an external pressure source?
Is that with or with out an external pressure source?
11-12-2003, 03:57 PM
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Re: (TrueNorthStar)
thats just with the profec unit itself.
using an external source you could feasibly keep the wastegate closed no matter the boost level.
using an external source you could feasibly keep the wastegate closed no matter the boost level.
11-12-2003, 04:21 PM
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Re: (Foozball26)
it will boost around 30 pounds if hooked up correctly. i have a 9 pound spring and at the 1:00 o'clock position i am at 23 pounds
11-12-2003, 04:35 PM
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Re: (speedworks)
yea i think it depends on how its hookedup, ive been trying to get answers on this for a while. i was told when i had my 6psi spring it would top out at like 18-20 psi.. ..soi stepped up to 10psi spring on the new WG , hoping i can get at least like 26 psi from it.
i dont wanna have to run 1bar every day if i dont want to. i know when setting up my spec 2 when the desired boost level is too close to the spring rate its a bitch becuase theres nothing really to adjust. of room to fine tune.
i dont wanna have to run 1bar every day if i dont want to. i know when setting up my spec 2 when the desired boost level is too close to the spring rate its a bitch becuase theres nothing really to adjust. of room to fine tune.
11-12-2003, 05:16 PM
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Re: (Evil DOHC)
Im running a 8 psi spring and the greddy profec b spec 2. At 55% it boosted 20psi on my setup. I havent tried to go any higher than that yet.
11-12-2003, 08:35 PM
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Re: (speedworks)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by speedworks »</TD></TR><TR><TD CLASS="quote">it will boost around 30 pounds if hooked up correctly. i have a 9 pound spring and at the 1:00 o'clock position i am at 23 pounds</TD></TR></TABLE>
can u tell me what im doing wrong or tell me how to hook it up right?
can u tell me what im doing wrong or tell me how to hook it up right?
11-12-2003, 10:58 PM
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well since im running a 10 lb. spring and the profec can control 14 lb. + standard spring, that means around 24 psi. then how come i cant pass up 17-18 psi?
im also using a GE vacuum manifold and i have the skinny vacuum line from the controller tapped on that... would that be a problem?
im also using a GE vacuum manifold and i have the skinny vacuum line from the controller tapped on that... would that be a problem?
11-13-2003, 05:52 PM
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Re: (TurboDANDEE)
dandee,
with a 40mm wastegate and a 12psi spring I would hit 23 psi at the 12 oclock position. I had my gain setting on full sharp. I noticed that as you go to mild the boost declines. I am wondering if the bigger wastegate you are using is limiting your boost. donno.
Someone mentioned about an external pressure source.. I am pretty sure that it can also be done on the greddy profec b as well. I haven't tried.. but the concept is the same. I may be doing a co2 setup with my innovative boost controler.
with a 40mm wastegate and a 12psi spring I would hit 23 psi at the 12 oclock position. I had my gain setting on full sharp. I noticed that as you go to mild the boost declines. I am wondering if the bigger wastegate you are using is limiting your boost. donno.
Someone mentioned about an external pressure source.. I am pretty sure that it can also be done on the greddy profec b as well. I haven't tried.. but the concept is the same. I may be doing a co2 setup with my innovative boost controler.
11-13-2003, 09:10 PM
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Re: (GSRev)
Alex, does your boost creep or "bounce around" when u have the gain on sharp? i think i tried that once and my boost was unstable 
ill try again tomorrow, before i head to the track...
ill try again tomorrow, before i head to the track...
but i doubt it can go up to 28 lbs. with my 10 lb. spring 
11-16-2003, 11:41 AM
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Re: (tony1)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 »</TD></TR><TR><TD CLASS="quote">just a note, you can use co2 with any boost controller...</TD></TR></TABLE>
Just out of curiosity, how much pressure do you use for the CO2 system to the boost controller?
Just out of curiosity, how much pressure do you use for the CO2 system to the boost controller?