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Wastegate adjustment - More HP? V70-XC70 2000

posted by  someone claiming to be Eric G. on  Tue Feb 20 02:11 CST 2001 [RELATED]

Hi

I have had my wastegate adjusted lately to give a little more boost on the LPT. My tech said at around 3800+ RPM, I would start feeling a rush (definitely felt it) but he wasn't sure, in theory, the extra number of HP this could provide. The XC seems quicker as soon as the RPM rise however I don't think we're talking about huge improvement here. Would any tech around here perhaps have a "guesstimate" of such modification?

Thanks!







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    Re: Wastegate adjustment - More HP? V70-XC70 2000

    posted by  someone claiming to be Nick on  Tue Feb 20 16:07 CST 2001 [RELATED]

    How did you adjust the wastegate? ... I need info ... -thanks







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      Re: Wastegate adjustment - More HP? 850 1995

      posted by  someone claiming to be derspi on  Tue Feb 20 21:09 CST 2001 [RELATED]

      Detailed instructions on how to adjust the wastegate are at VolvoTuning.com. Just don't overdo it or you'll set off a check engine light. Just to let you know, this adjustment made a difference on my car too.







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    Re: Wastegate adjustment - More HP? V70-XC70 2000

    posted by  someone claiming to be Arno Griffioen on  Tue Feb 20 06:49 CST 2001 [RELATED]

    With a shortened wastegate rod you will see a sharper rise in boost pressure (more 'immediate' response), but steady-state boost pressure at WOT will not be affected as it's ECU controlled and the wastegate is only set for a low baseline boost (about 40% of the final boost level) and does not get controlled directly by the boost pressure as on many Japanese cars.

    The ECU has a valve in the pressure line to the wastegate actuator and it opens or closes it to regulate the pressure 'seen' by the actuator and thus (indirectly) boost pressure.

    Need more power? Get an ECU upgrade. Pretty much only way to go on Volvo's.

    Bye, Arno.






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