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curious boost behaviour

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Old Jul 22, 2008 | 08:21 PM
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an1mal_69
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Default curious boost behaviour

when the car comes on boost it holds 10psi..as it passes 4000rpm, boost starts to rise with engine revs topping 20psi @ 5500rpm where the ECU cut kicks in
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Old Jul 22, 2008 | 08:30 PM
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? confused mate, what car firstly, what spec?

so what you saying is it hold 10 psi until 4000rpm, then rises to 20psi until the rev limiter at 5500rpm?
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Old Jul 22, 2008 | 08:49 PM
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Too weak actuator I'll guess
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Old Jul 22, 2008 | 08:51 PM
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Originally Posted by Kverna
Too weak actuator I'll guess
not sure as i wouldnt have thought a weak actuator would make 20psi, especially rising to 20psi as well; weak actuators normally result in a bit of boost then tailing off dramatically
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Old Jul 22, 2008 | 08:52 PM
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its a 2.1, fresh build

T3/4 with a focus RS act' Ive not set the actuator yet as ive only just got a decent set of hoses on, kept poppin my others off, but id expect a weak actuator to leak boost not increase it..??

Im not worried about it, as i said ive not set it proper yet..jus thought it was a wierd thing to happen..
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Old Jul 22, 2008 | 11:26 PM
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Originally Posted by an1mal_69
its a 2.1, fresh build

T3/4 with a focus RS act' Ive not set the actuator yet as ive only just got a decent set of hoses on, kept poppin my others off, but id expect a weak actuator to leak boost not increase it..??

Im not worried about it, as i said ive not set it proper yet..jus thought it was a wierd thing to happen..
Sorry I'm in my own thoughts tonight. Never mind my post
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