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[Alloytec] Classic 2 hole mod

Discussion in 'V6 Development And Modification' started by Dom27, Jan 2, 2013.

  1. Dom27

    Dom27 New Member

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    I own a VZ with an Alloytec 175. I would like to do the 2 hole mod to my air box, but i have a few questions surrounding it. Before you flame and tell me to search on the forums, i have... HEAPS :)
    what would be the best option out of:
    - 2 holes w/ stock air filter
    - 2 holes w/ k&n panel filter
    - any of the above, except with a MCAI shroud which i have seen a few guys do.

    is the shroud necessary? (if so where the F do i find one?)

    Cheers.
     
  2. Kiddo

    Kiddo You're serious bro?!

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    Ive heard mixed reviews with the 2 Hole Mod. But from my knowledge, the cheapest route is 2 holes w/ stock filter.

    I've info from several respected tuners the stock filter flows enough as is.
     
  3. showbags

    showbags SENIOR EL'BAGO

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    K&N filter will just oil up your MAF. Just stick with standard filter.
     
  4. Dom27

    Dom27 New Member

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    Great, cheers guys. And should I bother with obtaining a MCAI?
     
  5. DJ_Cosmic_Fire

    DJ_Cosmic_Fire smarter not harder

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    Just get a MACE CAI for your VZ, it's purpose built for your application, simple to install & has a much cleaner look.
     
  6. Dom27

    Dom27 New Member

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    It sure does look good and is better. Problem is, it's $270? :p Out of curiousity though, how much difference in performance will i get between the 2 hole mod and that mace cai?
     
  7. GoodTimes

    GoodTimes New Member

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    Nothing really. Where as if you do lots of little mods you will get a fair bit. It's nothing really by itself.

    Sent from my GT-I9305 using Tapatalk 2
     
  8. Dr HaxZaw

    Dr HaxZaw New Member

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    i did a mcai for my vy v6... no real power increase but it did increase throttle response somewhat and just made the engine breathe better
    you wont notice those sorts of things on a dyno in regards to power and torque but then throttle response isnt really something that will show up there
     
  9. Dom27

    Dom27 New Member

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    While we're at it, what other cheap mods can i do to an alloytec? the 2 hole mod seems to be the only one i've found.
     
  10. Kiddo

    Kiddo You're serious bro?!

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    Manifold spacers, but theres some debate about them.

    Some like them for the increase lower torque (due to the intake runners being expended 12mm) and others claim that there was no difference.

    Personally, i did feel a very slight difference.

    They retail for about $150
     
  11. Dom27

    Dom27 New Member

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    Oh yeah, could recommend a good set of spacers? Also, what option do i have for tuning. What performance gain would i get on a 175 and how much would it cost to get it tuned properly?
     
  12. HERONVY

    HERONVY New Member

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    Do what I done and just get the mace cai and run some duct from near the front passenger side fog lamp back into the mace box :)

    Or do the same duct trick with a monaro cai and run the standard panel filter with the 2 hole mod

    Sent from my GT-I9300T using Tapatalk 2
     
  13. billy bob

    billy bob Member

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    Theres a good write up on the 2 hole mod in the How To section
    Page 2 about a 1/4 the way down
     

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