PLEASE HELP!!! Read Read Read!!!
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PLEASE HELP!!! Read Read Read!!!
Guys I need your help... My setup is a 00 Civic SI b16a2 with a Precision SC50 .63a/r and a 35mm Tial w/g that's set for 6.5psi and a Drag manifold. When I give it full throttle I show .7 bars(about 10psi), which is what I want. But all the sudden at 7500 to 8000rpm redline it goes up to 1.1 bar(about 15.5psi) What's going on? Is it my Wastegate and why? My Drag manifold? It's never done this before!!! Please Help
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Re: PLEASE HELP!!! Read Read Read!!! (9psiTurboSI)
drag manifolds are notorious for boost spike from what i hear. that's why i didn't buy one, and bought an inline pro instead. i hope you get your problem fixed soon
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Re: PLEASE HELP!!! Read Read Read!!! (ha illuminato un)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ha illuminato un »</TD></TR><TR><TD CLASS="quote">drag manifolds are notorious for boost spike from what i hear. that's why i didn't buy one, and bought an inline pro instead. i hope you get your problem fixed soon</TD></TR></TABLE>
Yea that's what I heard, but it didn't do it before
Yea that's what I heard, but it didn't do it before
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Re: PLEASE HELP!!! Read Read Read!!! (InTeGrA B18b1)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by InTeGrA B18b1 »</TD></TR><TR><TD CLASS="quote">i ported the wastegate and what kind of wg you got? mine doesnt spike with open dp.</TD></TR></TABLE>
Tial 35mm w/g
Tial 35mm w/g
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Re: PLEASE HELP!!! Read Read Read!!! (9psiTurboSI)
my guess is he has a boost leak and its not building full boost until very late in the rpm band giving the illusion of boost creep.
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Re: PLEASE HELP!!! Read Read Read!!! (94goldjungsr)
Here's my (purely theoretical) response. From the research I've done, I think your boost creep is a property of your manifold design. When the wastegate is mounted to one primary pipe, instead of in the middle of the manifold, where all four primaries feed it equally, you get boost creep. This is because only the exhaust flow from the primary the WG is mounted to gets routed around the turbo through the WG. The other three primaries feed exhaust flow through the turbo, creating more boost. Think about it, if exhaust flow from all four primaries were to escape the manifold through the WG, three of the primaries' flow would have to go upstream of the primary the WG is mounted to. Make sense? As RPMs / flow increase, the placement of the WG on the manifold begins to limit the amount of exhaust flow that can bypass the turbo, which is what limits your boost.
I've heard Tial makes good WG's, so I don't think that's your problem. I think its time for you to get a manifold of better fundamental design. Anyone else agree?
- Jim
PS - In my opinion, this topic could have been named better. Hope this helps though, and good luck.
I've heard Tial makes good WG's, so I don't think that's your problem. I think its time for you to get a manifold of better fundamental design. Anyone else agree?
- Jim
PS - In my opinion, this topic could have been named better. Hope this helps though, and good luck.
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Re: PLEASE HELP!!! Read Read Read!!! (Sylverius)
Thanks... That makes sense, but i just remember that my Tial gasket blew up. So I was wondering if there wasn't a tight seal and at high rpms the boost would leak out when i just use the tial with no gasket.... I just got my fire-ring so i should install it and see how it goes!!! Maybe that was the problem huh ?
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