what cause boost spike??
05-22-2002, 04:17 PM
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what cause boost spike??
I have a tial wastegate with profec b. let say went I set it at 8 psi it will spike to 10-11 and the it will settle at 8psi. if I set it at 14, it will also spike up 2-3 psi to 16-17 psi and settle back to 14psi. Why is it doing that?
05-22-2002, 04:22 PM
#2
Re: what cause boost spike?? (KekeK-18)
If you have an EBC, you should try lowering the gain. That is a very common cause of boost spike. Manifold--> downpipe design is another. If you have a source of obstruction or a resonance in your pipe you may have spike or boost "creep"
05-22-2002, 04:24 PM
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Re: what cause boost spike?? (KekeK-18)
what manifold do you have?if it is drag,it could be because the wastgate is on one runner.i just got my boost creep problems solved with a new manifold that let me feed the wastgate with all four cylinders.
05-22-2002, 05:10 PM
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Re: what cause boost spike?? (turbotypeR)
I have the kooks manifold, I don't have this problem before, the boost was nice and steady....just recently. One thing I did is instead of using Ts for the vacuum lines, now every vacuums is plug into the intake manifold individually.
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