boost creep near redline?? is that my problem or is something else wrong
01-20-2006, 09:01 AM
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boost creep near redline?? is that my problem or is something else wrong
well ive heard of this happening on high hp/flow setups, but i dont think im making much over 300hp.
setup:
ls/vtec
ramhorn mani
57 trim t3/t4
tial 38 .5 bar spring
3" downpipe with e cutout
hallman mbc turned all the way down.
finally took the car out for real the other night. its holding a solid 10-11 psi (off the 7.25psi spring, open cutout) but from like 7500-8500 rpms the boost makes it way up to 13 or so psi. my passenger said i hit 15 psi once, which im not keen on because i dont have fuel/tuning up that high right now.
vacuum lines are all hooked up and whatnot, what do you guys think is happening?
setup:
ls/vtec
ramhorn mani
57 trim t3/t4
tial 38 .5 bar spring
3" downpipe with e cutout
hallman mbc turned all the way down.
finally took the car out for real the other night. its holding a solid 10-11 psi (off the 7.25psi spring, open cutout) but from like 7500-8500 rpms the boost makes it way up to 13 or so psi. my passenger said i hit 15 psi once, which im not keen on because i dont have fuel/tuning up that high right now.
vacuum lines are all hooked up and whatnot, what do you guys think is happening?
01-20-2006, 09:04 AM
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Re: boost creep near redline?? is that my problem or is something else wrong (blackeg)
My Neukin ram horn manifold does the same thing. I boost around 16 PSI but it'll creep to 17 or 18 by 7000rpm. We pretty much have the same setup, but I think it's just the wastegate placment on the manifold. 
. Oh well, I'm not too worried about it since it's tuned for it. GL on the fix 
. Oh well, I'm not too worried about it since it's tuned for it. GL on the fix
01-21-2006, 08:23 PM
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Re: boost creep near redline?? is that my problem or is something else wrong (adseguy)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by adseguy »</TD></TR><TR><TD CLASS="quote">My Neukin ram horn manifold does the same thing. I boost around 16 PSI but it'll creep to 17 or 18 by 7000rpm. We pretty much have the same setup, but I think it's just the wastegate placment on the manifold. . Oh well, I'm not too worried about it since it's tuned for it. GL on the fix </TD></TR></TABLE>
yea man, once i get larger injectors i wont give a rat's ***, its just right now im way on the borderline of my current ones, so i dont have the fuel should i hit much more than 12 psi. i was rompin on it good today and i didnt see over 12 psi.
. Oh well, I'm not too worried about it since it's tuned for it. GL on the fix </TD></TR></TABLE>yea man, once i get larger injectors i wont give a rat's ***, its just right now im way on the borderline of my current ones, so i dont have the fuel should i hit much more than 12 psi. i was rompin on it good today and i didnt see over 12 psi.
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01-23-2006, 10:00 AM
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Re: (blackeg)
yep, definately cost me the block and pistons.
IF YOUR ENGINE MANAGEMENT HAS A BOOST CUT FEATURE, USE IT.
thats my advice to anyone who might read or search this later on.
IF YOUR ENGINE MANAGEMENT HAS A BOOST CUT FEATURE, USE IT.
thats my advice to anyone who might read or search this later on.
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