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Where to spend a few bucks enhancing my wm v8

Discussion in 'VE Holden Commodore (2006 - 2013)' started by TrickyRicky08, Nov 27, 2018.

  1. TrickyRicky08

    TrickyRicky08 New Member

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    I’ve recently bought a 6.0 v8 it’s lowered and pretty tidy. I’m just looking to have it sounding tough without been too loud and improve it’s efficiency. This is what I’m proposing to do:-
    A cold air intake with maf.
    Pacemaker or hurricane y extractors.
    Fast flo catalytic converters 200.
    Rear mufflers replaced with resonators.
    A tune
    I’d really appreciate your comments cheers
     
  2. gohrdrgomad

    gohrdrgomad Active Member

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    A 2.5" twin system isn't to loud and will suit up to 500hp apparently and is a comfortable noise level. Y headers will keep your low tourq but lack flow mid to high end. The otr is good if you drive on cold days. Regular cleaning is required for everyday application.During the summer l can't see that a snorkel mounted over a radiator that's at 100 cel+ is more effective than a air box with a hi Flo filter. A maf tune might give you a 20 kw increase ive been advised depending on boltons. In my opinion try to fit all 1 brand exhaust weather its pacemaker or b brand.
     
  3. vr304

    vr304 Well-Known Member

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    I’d agree with that but there’s a reason Otr intakes are so commonly used in power upgrades, not because they make it worse
     
  4. JoshlikesCalais

    JoshlikesCalais Active Member

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    oh you wanted it quiet... was going to suggest 3" twin Difillipo system
     
  5. gohrdrgomad

    gohrdrgomad Active Member

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    I didn't suggest it would be worse. The cooler air becomes heated and effectively defetes its purpose on a hot day. I've had the option to fit or Not. It's just a cheap bolt on that gives a bit of a buzz and the trend follows. People are now unsatisfied with them thats a fact. The $500 you spend on the otr that requires $1000 custom tune will need a retune when you spend 7k or so doing a cam and then a retune when you are faced having to just rebuild the engine as the engine needs bearings, rings, new pistons etc. Bang for buck id rather a rebuild.
     
  6. wraith

    wraith Hand over the dog bikkies

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    OTRs used to be pretty effective back in the VT to VY days with their some what restrictive piping and MAF. Most of the gains to be had were probably just in removing the MAF along with the tune. I'm no tuner though but have always been dubious about the benefit of an OTR sitting on a hot radiator.
     
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  7. VS 5.0

    VS 5.0 Well-Known Member

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    @immortality did tests some time ago comparing air temps between otr and a mace air box in the factory position.

    Surpirse, surprise, OTR air was hotter than air box in factory position.

    I have never understood why an OTR with hotter air is a benefit.
     
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  8. wraith

    wraith Hand over the dog bikkies

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    Louder noise = performance
     
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  9. MYVESSV8

    MYVESSV8 Well-Known Member

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    AFR's with the OTR etc, greater mass than standard position etc (i'm no tuner either :rolleyes:)
     
  10. 07GTS

    07GTS Well-Known Member

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    my engine was first tuned with a pod style behind the front light, intake temps were super high so i fitted a OTR, AFR leaned out in PE meaning it flows much better but was still safe until a retune corrected it back to safer to suit new airflow, intake temps were 15-20c less during a run with the OTR compared to the pod style, all depends how u mount the OTR heat soak dosnt have to be as bad as some
     
  11. TrickyRicky08

    TrickyRicky08 New Member

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    Thanks for everyone’s input, though everyone is struggling to come to a consensus..
    I saw a mate who has an exhaust centre today and he said if we start playing upfront then it can get pear shaped pretty easily so he has suggested I put some hotdogs in the middle that join the two sides to the exhaust system together.
    My caprice has a k&n filter in it so I’m still undecided about going for a cai. I did watch a u tube video where with a tune and a cai gains of 40 kw were achieved!! (Same motor and pretty stock, I think.) I am getting it tuned soon regardless of the decision on the cai, as im getting it cheap:) so what’s the consensus about the air intake than people?
     
  12. 426Cuda

    426Cuda SUBLIME!

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    I read up on this a lot, before getting a CAI for my Motorsport.
    OTR's flow more air than stock, but can be affected by heat. Pods which are just placed behind a panel also flow more than stock, but can also be affected by heat, possibly even more so than OTR's. The Roto-Fab CAI's are a pod filter placed inside a sealed box, with a larger, less restrictive air pick up. The box is OEM quality and also includes a heat shield. Although a bit more exe than an OTR, they look great and from all reports perform well. Certainly favourable to traditional OTR's.
    I've had mine fitted for a few months now and am very happy with it.
     

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