Boost Problem, Possible bad turbo?

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dustyk
Posts: 276
Joined: Wed Jan 28, 2004 3:35 pm

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So I just got back from Falken Drift Showoff in Maryland and my car is having boost issues. I had the Profec B set to boost around .85 but now my car doesnt boost like it used to. When I floor it, it first off takes a lot longer for the boost to come on then it used to. Also, the boost initially climbs as high as .75 bar, but then it immediately drops back down and stays around .6ish. I thought it was a boost leak, but my Wide Band O2 sensor isnt reading rich and the car doesnt bog so I dont think that is the problem. Just to tryit out, I turned the boost controller off, and the car only boosts .27 which is around 4psi ish. Do I possibly have a bad turbo or actuator? or is it something else?

If anyone has had a similar problem, let me know


Nismo_Freak
Posts: 10314
Joined: Wed Jul 24, 2002 10:42 pm
Car: 89 Nissan 240SX

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dustyk wrote:So I just got back from Falken Drift Showoff in Maryland and my car is having boost issues. I had the Profec B set to boost around .85 but now my car doesnt boost like it used to. When I floor it, it first off takes a lot longer for the boost to come on then it used to. Also, the boost initially climbs as high as .75 bar, but then it immediately drops back down and stays around .6ish. I thought it was a boost leak, but my Wide Band O2 sensor isnt reading rich and the car doesnt bog so I dont think that is the problem. Just to tryit out, I turned the boost controller off, and the car only boosts .27 which is around 4psi ish. Do I possibly have a bad turbo or actuator? or is it something else?

If anyone has had a similar problem, let me know
Yeah sounds like the turbo is on it's way out or you have a faulty actuator.

bruinbear714
Posts: 1159
Joined: Thu Sep 05, 2002 9:58 pm
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First thing's first... bypass your boost controller and run it with a stock setup.

Luke

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Have you checked for exhaust leaks around the manifold/turbo flange?


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