wastgate control?blow?

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  • peter
    S2Forum Fanatic
    • Dec 2004
    • 96

    #1

    wastgate control?blow?

    not sure on this one,i get a "ticking" noise under certain acceleration conditions from turbo/exhaust side of engine,no difference if hot or cold,no loss of power,no obvious blow,is this the wastegate letting off?or something worse!1993 aby avant,fingers crossed.
  • Mihnea
    S2Forum Extremist
    • Jul 2003
    • 1288
    • Home: Belgium Current: United Kingdom

    #2
    it could be the WGFV cycling, I know that when doug had it bolted to the actual crossmember, it used to be very loud and audible with WOT at low revs where the exhaust wasn't loud enough... this was particularly noisy when his old turbo was still on...
    '98 Silver Grey 2.7T S4, dual 2.75" turbo back exhaust with no cats, FMIC, BIG injectors, 10 Bar motorsport fuel pump, modded RS4 turbos, tubular exhaust manifolds, custom intakes, RS4 MAF, Bilstein PSS9, H&R ARBs, 19" BBS CH, custom remap, 511 BHP/505ft-lbs

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    • audiman
      S2Forum Freak
      • Jul 2003
      • 4827
      • Country: United Kingdom

      #3
      agreed, you can hear mine sometimes when using WOT at low revs. WGFV going ape****e trying to make boost (well lag in my case)
      sigpic
      Tom C - www.rcmr.co.uk
      Audi UR Quattro
      Audi 100 C3 2.0 5 cyl 115ps
      Audi S2 - 07k engine project aiming for 800ps
      Audi B5 RS4 645ps 911nm

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      • porkkis
        S2Forum Extremist
        • Aug 2003
        • 1994
        • Country: Finland

        #4
        Or surge? Tsah-tsah-tsah-tsah?
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