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timing for turbo

Discussion in 'Forced Induction' started by b16rex, Aug 25, 2004.

  1. b16rex

    b16rex Junior Member

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    Just wondering if a turbo application is similar to nitrous. Do you have to compensate by retarding your timing and if so how many degrees per psi?? Thanks, Mike
     
  2. pissedoffsol

    pissedoffsol RETIRED

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    nitrous doesn't run on psi.. lol

    but, nitrous is more like an all motor setup in terms of timing... nto as much, but a slight advance up top will make good power.

    butyou better have the fuel to keep up with it.
     
  3. [Freemantle]

    [Freemantle] Senior Member

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    The conservative "retard per psi" for turbo setups is about .8-.95 degrees per psi, never to fall below 7 degrees. These are only used to set base maps to be built apon with further tuning. Over-retard and advance back to perfect.
     
  4. b16rex

    b16rex Junior Member

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    cool thanks guys!! :D Also I was just wondering about my wastegate. I have a 35mm tial with a 6 pound spring. When the wastegate senses full boost it lets out the extra right?? Or does it let all the boost out to where you dont get anymore? When I get in to the upper rpms I hear a woosh sound(wastegate opening?) then I feel like I hit a wall losing power?? I initially thought of fuel, but my a/f gauge is still in the green. Dont know whats going on!! Please help... Thanks Mike
     
  5. hcivic.com

    hcivic.com Senior Member

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    when the boost hits 6 psi it opens leting out the excess pressure
     
  6. nfn15037

    nfn15037 Senior Member

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    Maybe your blowoff valve is set too loose allowing it to open and bleed off boost at the wrong time? You really should have a general understanding of this stuff before getting it on your car..... :unsure:
     
  7. b16rex

    b16rex Junior Member

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    Actually this is my second turboed car. I had a 99 si with a drag gen 3 kit and I had no problems whatsoever. Thanks for your help though!! I'll try the bov!! :)
     
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