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What can cause overboost?

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Old 10-13-2007, 06:50 PM
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Xel
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Default What can cause overboost?
at 5100 rpm, any gear... get fuel cut off like when you hit speed limiter(not that anybody has done that).

Can a bad fuel pump cause this?
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Old 10-13-2007, 07:26 PM
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Suede gas, because there's too much Octane
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Old 10-13-2007, 07:36 PM
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Default Have you checked your waste gate diaphram?
Does it always cut at the same boost levels?

My old 5K had a non-existant diaphram; felt like hitting a brick wall...

HTH
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Old 10-13-2007, 08:50 PM
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I've always wondered, do these cars boost creep with a larger exhaust?
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Old 10-13-2007, 10:23 PM
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Default stock turbo is going to back off at 5500rpm, 034 spring drops at 5100
its got nothing above this
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Old 10-14-2007, 02:29 AM
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yes, but the ECU is cutting fuel in this case
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Old 10-15-2007, 07:45 AM
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Huh? If you are talking K24 maybe. But with an RS2 turbo the 1.9bar spring is fine to redline IME.
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