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boosting problem... giac chipped 01. spikes about 20psi, then immediately drops to 12psi...(more)

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Old 12-06-2006, 11:57 AM
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Default boosting problem... giac chipped 01. spikes about 20psi, then immediately drops to 12psi...(more)
its like once it sees up above like 18psi, it cuts the boost down around 12psi. i have replaced the common "L" hose and just replaced the vaccum pump "y" tube that connects the "L" hose to something, and then goes to the brake booster.

any help is GREATLY appreciated.
thanks in advance.
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Old 12-06-2006, 12:09 PM
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N75? How many miles on K03S? Log 119 for WG duty cycle yet?
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Old 12-06-2006, 12:12 PM
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i checked the N75 about 3 months ago, resistace in spec. 113k miles stock turbo. log to come
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Old 12-06-2006, 12:13 PM
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Default Re: boosting problem... giac chipped 01. spikes about 20psi,
atleast u get that- mine doesn't get above 12psi-

what is up with mine?
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Old 12-06-2006, 12:14 PM
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I bet you and I are in the same boat(: WG is shot need new Turbo.
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Old 12-06-2006, 12:15 PM
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Doesn't get above at all?
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Old 12-06-2006, 12:15 PM
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Default Re: Doesn't get above at all?
nope- what can I change or do?

13 psi tops!!!!
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Old 12-06-2006, 12:16 PM
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Default Re: Doesn't get above at all?
maybe I have a leak- but would that make the check engine light come on?? As of rt now there is no light- So i'm not sure if there is a leak
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Old 12-06-2006, 12:20 PM
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how did u get it down to the wastegate? and you can replace the wastegate im pretty sure
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Old 12-06-2006, 12:21 PM
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Default You can have ton's of leaks with no CEL. I gurantee you have a leak. Check L hose...
all vac lines. Check N75 yourself.
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