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LS3 Air Intake

Discussion in 'VF Holden Commodore (2013 - 2017)' started by vss304, Jun 29, 2020 at 6:41 PM.

  1. vss304

    vss304 New Member

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    Hey all, I've got an LS3 VF Calais that I want to help breathe a little better so I am looking at the air intake. I was going OTR until I had a chat to a mate who has told me he doesn't like them and suggested looking into stainless and silicon piping instead.

    I don't remember why he doesn't like OTR, that conversation was at the start of a 1000 beer evening..

    Anyway, what do you guys reckon? Has he got a point? Or is he full of **** and OTR is the best cold air intake?

    Or is he right and can anybody point me ion the direction of some alternative ideas or kits please?

    *EDIT
    Extractors, hi flow cats and a tune are also on the list. Don't want big power, more interested in efficiently using what is already there.

    Kade.
     
    Last edited: Jun 29, 2020 at 7:30 PM
  2. Milo 6.0

    Milo 6.0 Active Member

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    Otr is the most effective intake by far,they make the most power tuned because of the shorter more direct intake path, its just common sense.
    You cant beat a harrop/vcm otr.
    Panel filters with the stock air box are a waste of money,the stock filters these days flow pretty good,trust me i went down that path first....
    Untuned any cold air intake will make minimum gains,tuning is needed to maximise performance from any mod tbh.
    Just my experience.
     
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  3. 07GTS

    07GTS Well-Known Member

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    i prefer a good OTR but each have there purpose, if u dont have the ability to cool the aircharge after the throttle body then u have to get the coolest air into the TB
     
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  4. Hq King

    Hq King Active Member

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    Both these guys are correct but so is your m8 it is generally considered you will get best performance from a otr due to the large pressure point in front off the radiator and the short straight run into the intake air filters get dirtier quicker and are probably a bit harder to change than your standard panel filter . Air will always travel better through a straight smooth surface so if you can smooth out your air travel you will get improvement. I forgot about intake noise a lot more with the otr some like some not so much .I personally like the look of the otr with infill myself but don't want to go that way with my magnum
     
  5. shane_3800

    shane_3800 Active Member

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    I bet if dyno tested the intakes would make make 1% if that. It's more in the tune not the intake.
     
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  6. Hq King

    Hq King Active Member

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    True but 1% probably 1 tenth which equals a car length on the 1/4 mile which is quite a bit and the higher mph you go the bigger the benefit which you don't see on a dyno
     
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  7. VS 5.0

    VS 5.0 Well-Known Member

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    Or legally on the street ?
     
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  8. vss304

    vss304 New Member

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    What are you planning to do?
     
  9. Hq King

    Hq King Active Member

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    I want to put a hsv airbox and inlet snorkel with the flap which I would like to make operational the snorkel is slightly larger than stock with flap open will be more than enough air for my power level I just need someone to help me with the operation of flap oh and I need the air box and snorkel which may prove harder than first thought anyone out there who could help with above would be much appreciated
     
  10. peterhor

    peterhor Member

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    did you take a look here
     
  11. shane_3800

    shane_3800 Active Member

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    I remember I watched a video and they had a V8 of some description it was fairly stock. They wanted to increase the power and the dyno guy said don't worry about the intake. He said intake mods will give you 1-2% at best but exhausts can gain 8-10% if set up correctly.
    CAI's are important if you require one but the truth is most modern V8 sports cars don't require them.
     
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  12. Hq King

    Hq King Active Member

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    You are correct you will get more out of exhaust but I think they need each other more in more out well I NEED BOTH well maybe just want both lol
     
  13. abuch47

    abuch47 Active Member

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  14. 426Cuda

    426Cuda SUBLIME!

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    Happy dyno!
     
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  15. shane_3800

    shane_3800 Active Member

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    I'll watch this when I get home because I'm listening to Mac Miller atm but I bet I'll see my prediction come true and it'll be 1-2% increase. Maybe 3% at a stretch
     
  16. Milo 6.0

    Milo 6.0 Active Member

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    Was it you who said you gained over 20rwkw just by adding high flow cats over the super restrictive factory hsv cats?
    If it was i wouldnt be talking about questionable dyno results if i was you.
     
  17. VS 5.0

    VS 5.0 Well-Known Member

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    284kw with just exhaust on stock tune ?
     
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  18. 426Cuda

    426Cuda SUBLIME!

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    Yeah, but then you're me are you.
    I stated what my tuner and the dyno sheets (which I uploaded said). Unless I missed something, mine has as much done as the one in the vid and made a bit less than 260rwkw. Hardly overstated.
     
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  19. Milo 6.0

    Milo 6.0 Active Member

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    You know what im getting at,your dyno results are bullshit when you changed cats and you know it,yet you will take the piss at other dyno results knowing full well yours are bullshit too.Good luck with that lol
    Worse still you quote street quick results like they are gospel and they fully disprove your dyno results as well.
    Afaik street quick are known to have a very accurate and repeatable dyno and are known for that fact in the industry.
    24 rwkw with just high flow cats bahaha,street quick only managed 23 rwhp with a full exhaust(tuned)
    Dont let the truth get in the way of a good yarn ay...
    You have no right to be questioning dyno results.
     
  20. Milo 6.0

    Milo 6.0 Active Member

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    Im referring to what this bloke with the spitfire coloured car said about the gains he made when he changed his cats,his results were questionable at best,thats what i was talking about.
    I think the dyno video is a good comparison at what percentage of gains can be made with what intake,how accurate the actual peak numbers are is anyones guess.
     

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