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Another one. Exhausted

Discussion in 'VF Holden Commodore (2013 - 2017)' started by 426Cuda, Nov 12, 2017.

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  1. Nov 14, 2017 #41
    PeteSS

    PeteSS Active Member

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    Yep. I've since changed the catback to 2.5 inch
     
    PeteSS, Nov 14, 2017
    #41
  2. Nov 14, 2017 #42
    426Cuda

    426Cuda SUBLIME!

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    I wasn't trying to start a header war you blokes. But, inevitable I guess. We're blokes! Haha.
    So after reading all the posts, links and vids, here's where I'm at:
    I don't have pr want it to be a race car. I want the best overall improvement in the bottom to mid range, perfect fit and nice note. I want the best solution for my (soon to be) mildy modded car. The way I drive my car. Legally, usually!
    The long tube tri-y has possibly noticeable, but still only marginally better tq and throttle response in the low to mid range. Maybe the best overall for street driveability, fit and clearance.
    4-1's? Sound is subjective, but it would seem most who have had both prefer the sound from these over tri-y's. I too prefer a deeper sound and am partial to a bit of deep old school burble.
    The bees dick difference in low to mid apparently can't be felt. Fair enough. But what about cruising at 110k and roll on acceleration? Again, I suspect it's marginal. But, any noticeable difference here? We all know our cars perform far better than legal limits allow us to use. But then the same is true for a stock SV6. We buy these cars partly due to how they perform and how they sound. So, I want the best of both from the upgrade. If it wasnt for the engine oil cooler clearance issues, I'd be using the HSV headers. They did a great job on my Redline.
    So:
    Low to mid range, under part and WOT goes to the long tube 4-2-1;
    Fitment possibly just goes to the 4-2-1;
    Clearance, again the 4-2-1 may have the edge here.
    Mid to high revs performance under say 2/3 or WOT goes to the 4-1's.
    Sound also probably goes to the 4-1's.
    Weighting?
    Well, I can all but eliminate the power battle as the difference is negligible. The other criterin I've weighted based on my perception of how big of an issue it will be:
    Fitment 20%. I'll make sure they fit before buying!
    Clearance 30%. I won't
    Be lowering the car much, if at all.
    Sound 50%.
    So, it's a bloody draw!!!!
    The reality is I'm no closer lol.
    Thanks for all the input gents.
    To quote Chisel "When the war is over, got to start again" haha.
    I'll let you all know which way I go.
    Cheers!
     
    426Cuda, Nov 14, 2017
    #42
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  3. Nov 14, 2017 #43
    blackve76

    blackve76 Well-Known Member

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    Tuners wars but header wars lol

    I've seen a few MSE s fitted with walkinshaw / difilippo exhaust so they fit.
     
    blackve76, Nov 14, 2017
    #43
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  4. Nov 14, 2017 #44
    426Cuda

    426Cuda SUBLIME!

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    Yeah, but narr, but yeah, but yeah, but narr...
    True.
     
    426Cuda, Nov 14, 2017
    #44
  5. Nov 14, 2017 #45
    immortality

    immortality Can't live without smoky bacon! Staff Member

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    I guess the best advice would be to find someone with either type of exhaust fitted and see how they sound etc.
     
    immortality, Nov 14, 2017
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  6. Nov 14, 2017 #46
    PSISLE

    PSISLE Well-Known Member

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    Whilst all you guys are pontificating over your numbers and figures and this and that, I’m out driving, and not regretting it, and not worrying if I should have fitted tri ys or 4-2-1.
    I understand, respect and enjoy spirited debate, but for a street car, most of this debate means f.a. Find your sound, make a decision.
     
    PSISLE, Nov 14, 2017
    #46
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  7. Nov 14, 2017 #47
    VS 5.0

    VS 5.0 Well-Known Member

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    What did you choose @PSISLE ?
     
    VS 5.0, Nov 14, 2017
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  8. Nov 14, 2017 #48
    EternityDre

    EternityDre Well-Known Member

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    Pretty sure he got the W407. I'd love to hear/drive a W407 one day to feel the difference the cam makes.
     
    EternityDre, Nov 14, 2017
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  9. Nov 14, 2017 #49
    PSISLE

    PSISLE Well-Known Member

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    W407 on my director, lowered on sl/ssl king springs with the Holden mrc. Wow. Looks like heaven and goes like hell lol
     
    PSISLE, Nov 14, 2017
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  10. Nov 14, 2017 #50
    VS 5.0

    VS 5.0 Well-Known Member

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    This needs a ride thread (or at least pics) !!!
     
    VS 5.0, Nov 14, 2017
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  11. Nov 15, 2017 #51
    426Cuda

    426Cuda SUBLIME!

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    Was waiting for this from someone. But then you cheated PSISLE and just bought yours from Big W. So, no decisions. :p
    PS : My pontification is done.
     
    426Cuda, Nov 15, 2017
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  12. Nov 15, 2017 #52
    PSISLE

    PSISLE Well-Known Member

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    Lol true cuda, I didn’t put much thought into it.
    Oh well my free warranty and free cover will have to keep me warm on those cold lonely nights with an empty wallet.
     
    PSISLE, Nov 15, 2017
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  13. Nov 15, 2017 #53
    EternityDre

    EternityDre Well-Known Member

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    I feel like I want to get involved in the fun so I'll say this for shits and giggles: Don't you mean your $4000 warranty? :)
    Unless you're referring to Holden's extended warranty..
     
    EternityDre, Nov 15, 2017
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  14. Nov 15, 2017 #54
    PSISLE

    PSISLE Well-Known Member

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    Haha not the overpriced undervalued walkinstick warranty anyway.
     
    PSISLE, Nov 15, 2017
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  15. Nov 15, 2017 #55
    LS3SS

    LS3SS Member

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    Totally agree with this! I love my Difilippo 3" with 1&7/8 4-1's with spirals in mid mufflers. Cuda, I was after the old school deep big block/ AMG 6.3 hotrod sound also, and I've found it with this system! Running a 10% over driven blower with biggish cam, so I have power everywhere in spades & awesome throttle response too. I don't doubt for a second that there may be gains with the 4 into 2 headers, but in my case, the small gains to be had are pretty much a moot point. I can comfortably drive in stop start City traffic, cruise on the highway or go beast mode whenever I want some fun. Love it!!
     
    LS3SS, Nov 15, 2017
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  16. Nov 15, 2017 #56
    426Cuda

    426Cuda SUBLIME!

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    Yeah true. Warranty is always a niggling concern. That's one of the reasons why I wanted to go the HSV route. 7 years in a looooonnnng time! But, I'm willing to risk it.
    Re the W407. Your car rocks with this package. If I was a little more flush with cash I'd probably go that way myself. Sadly I'm not :(
     
    426Cuda, Nov 15, 2017
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  17. Nov 15, 2017 #57
    Not_An_Abba_Fan

    Not_An_Abba_Fan Exhaust Guru

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    Warranty will only be affected if an aftermarket part causes the issue. I have never seen a warranty problem with a car caused by an aftermarket exhaust. The shop where I used to work did all the "performance" upgrades for both Ford and Holden here so they didn't have an issue with warranty.

    What PSISLE said is spot on and is what I have been saying all along. I really think you are putting way too much thought into it.
     
    Not_An_Abba_Fan, Nov 15, 2017
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  18. Nov 15, 2017 #58
    monstar

    monstar Naturally as-pirated

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    Yeah no need to think about it. :confused:
     
    monstar, Nov 15, 2017
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  19. Nov 15, 2017 #59
    Not_An_Abba_Fan

    Not_An_Abba_Fan Exhaust Guru

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    At least not on a street car.
     
    Not_An_Abba_Fan, Nov 15, 2017
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  20. Nov 15, 2017 #60
    MY17DIR

    MY17DIR Active Member

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    Have you thought about actually taking the car to the tuner/exhaust shop and seeing what it takes to tweak the HSV headers to fit? There may not be alot to it....
     
    MY17DIR, Nov 15, 2017
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