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Hi I have a problem with my 180sx (auto turbo 2L). It's been very laggy and not making boost until about 4000rmp even then its down on power. I thought it might be the waste gate actuator being stuck open but this is not the case. Its making some boost still so I don't think it's a turbo problem as its never been boosted up etc. Also it's definately not an ignition problem as it revs freely, doesn't miss etc. HELP!

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Hi I have a problem with my 180sx (auto turbo 2L).  It's been very laggy and not making boost until about 4000rmp even then its down on power.  I thought it might be the waste gate actuator being stuck open but this is not the case.  Its making some boost still so I don't think it's a turbo problem as its never been boosted up etc.   Also it's definately not an ignition problem as it revs freely, doesn't miss etc.  HELP!

Check your piping dude. may have a leak in them somewhere. Use soapy water at all flexi joints, see if it bubbles.

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