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Detonating on dyno

Discussion in 'Forced Induction' started by hatharry, Sep 19, 2012.

  1. hatharry

    hatharry Member

    So after doing a lot of work on my car and many dyno runs later after each mod ive hit a brick wall :banghead im only able to get 250whp on 95ron before it starts detonating the tuner said he found the sweet spot with boost and timing and that's all he can do. any advice guys?
  2. lone wolf

    lone wolf Well-Known Member Donated!

    try octane booster if you can't get higher octane fuel. That will make a significant difference.
  3. hatharry

    hatharry Member

    many people say octane booster fouls the plugs. there is the water injection path but that means i gotta make sure its topped up and the mix is right. what fuel are the other high powered celicas running on here?
  4. fernandocelica

    fernandocelica Well-Known Member Donated!

    The mixture I used to use was 5lt toulene to a 20lt racing fuel that boosted to +- 108 octane it worked perfect for me.
  5. lone wolf

    lone wolf Well-Known Member Donated!

    I use either 98 or 102 racing from shell just over the border in germany.
  6. Stig

    Stig ST162 Guru Donated!

    Run BP98?
    I don't think trying to fix the symptoms is the answer.
    It's either lean, too much compression or timing - so the only way to solve it before the motor goes in the bin is to figure where the problem lies and fix it

    I've driven behind guys running Toulene on 16-1CR and believe me it isn't fun or cheap

    Give us some specs, charts etc and maybe our boosted experts can tell you what to do
  7. Mafix

    Mafix Owner Staff Member Administrator Donated!

    what intercooler and spark plugs are you using?
  8. Klue

    Klue Well-Known Member Donated!

    need way more details
  9. hatharry

    hatharry Member

    sorry for the late reply. ended up taking my car into pitstop, the manager there owns a 600hp 5th gen drag celica. gave me all the right advice. the bad things were the intercooler was to small the pipes were to small . wastegate piping was all wrong. got it all fixed up. engine lasted abiut a month then the bottom end blew :banghead . so now upgraded to a 4th gen 3sgte stuck that in. just finishing up the tune and things should be good ill keep you posted
  10. BogzillaGTR

    BogzillaGTR Active Member Super Moderator

    Any news on the new motor ?

    Sent from my KM-UQM11A using Tapatalk
  11. hatharry

    hatharry Member

    4th gen motors all up and running. engine didn't come with a turbo, so got a 3rd gen cast manifold and used my old ct26 to t3 adapter and the t3/t4 turbo seen as it was my daily driver. came off the dyno at 300hp with 95 octane because i cant get 98 octane easily. now that's it not my daily driver (purchased a caldina gt-four st246). i can tune it with a new manifold, turbo and higher octane ;)
  12. BogzillaGTR

    BogzillaGTR Active Member Super Moderator

    Ah, good to hear its running again ! What psi did you 300hp at ?

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  13. hatharry

    hatharry Member

  14. BogzillaGTR

    BogzillaGTR Active Member Super Moderator

    Oh wow that pretty impressive, good to see another white st16x ;)

    Sent from my KM-UQM11A using Tapatalk

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