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getting backpressure

Discussion in 'VR - VS Holden Commodore (1993 - 1997)' started by The Darkness, Mar 8, 2007.

  1. The Darkness

    The Darkness Junk Yard Dog

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    ok.in theory, say i put on a 3 inch catback exhaust i get dirt cheap. i know that i would lose backpressure. how much tho. and how would the performance be affected? and is there anything i can do to gain backpressure with the 3 inch exhaust?
     
  2. stocky

    stocky New Member

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    does the exhaust have any flanges in it? if it does, maybe put some metal plate with a 2.5 inch hole in it to cause restriction. not sure if that would work but yeah
     
  3. The Darkness

    The Darkness Junk Yard Dog

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    ??flanges??
     
  4. Boonz

    Boonz Donating Member

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    put a decent sized turbo muffler in the middle and a triple flow muffler at the rear instead of a ressie or pipe
     
  5. The Darkness

    The Darkness Junk Yard Dog

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    ok. it is muffler then straight pipe. ne idea how much those above would cost?
     
  6. Boonz

    Boonz Donating Member

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    not heaps, probably be looking at around $100 for an ok one
     
  7. The Darkness

    The Darkness Junk Yard Dog

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    is that 100 for the tubo muffler and triple flow ressie? i can get the exhaust now for 50 bucks. so i'd have to add on the extra parts needed to that price
     
  8. Boonz

    Boonz Donating Member

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    nah dont get a resonator is you want backpressure.... a triple flow muffler gives the exhaust more flow but still retains some back pressure...triple flow mufflers are usually about $100 fitted to the rear section of the exhaust....ive got 2 lukey ones sitting in the shed waiting to be put on for when i get defected for being too loud
     
  9. The Darkness

    The Darkness Junk Yard Dog

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    ohk. so middle muffler then triple flow muffler put in the back. and that will give more backpressure
     
  10. Boonz

    Boonz Donating Member

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    yes... you should get enough back pressure from that and keep a little bit of the noise down lol....
     
  11. The Darkness

    The Darkness Junk Yard Dog

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    hopefully not too much noise kept down. not very happy with the 2 1/2 on it atm
     
  12. Boonz

    Boonz Donating Member

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    my mates got extractors, 2 3/4 inch mild steel with triple flow muffler in the middle and straight pipe from there and fuk me it is loud.... and i mean like over 100 decibels LOUD
     
  13. The Darkness

    The Darkness Junk Yard Dog

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    defectable loud. if i get this and its too loud, i'll get a silencer for it that can be removed
     
  14. Slow VR

    Slow VR Another White Crummodore

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    Go to supercheap and buy a can of "backpressure" and put it in ur fuel tank the next time u fill up....
     
  15. The Darkness

    The Darkness Junk Yard Dog

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    ha ha smartarse
     

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