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The Ultimate Alloytec Performance Thread

Discussion in 'VZ Holden Commodore (2004 - 2006)' started by impulsive, Jul 14, 2010.

  1. CAPRILICIOUS WL

    CAPRILICIOUS WL New Member

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    Just picked up a twin 2.5 xforce exhaust catback of a VT wagon, I hope it fits on my WL caprice.

    Anyone tried a twin 2 1/2 catback on their 6cyl 3.6L VZ or heard one on an alloytec?

    [​IMG]
     
  2. Not_An_Abba_Fan

    Not_An_Abba_Fan Exhaust Guru

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    It will fit, but you will have to extend the tail pipes as well as the arse end of the WL is longer than the wagon.

    It will sound like poo though.
     
  3. richardpalinkas

    richardpalinkas Blown Alloytec

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    I have a twin 2.5, most of my mates say it sounds pretty good, and not loud. Although I still have standard cats and manifolds. Search YouTube impulsesv6, he has a few vids of his exhaust change from a single 2.5 to a twin 2.5 xforce
     
  4. CAPRILICIOUS WL

    CAPRILICIOUS WL New Member

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    Yea I heard about having to extend the rear muffler pipes.

    I might give it a shot, bolt it on and see how it turns out to sound.

    After lots of reasearch half say it won't sound good and will drone other say it sounds mint.

    Cheers
    Dave.
     
  5. CAPRILICIOUS WL

    CAPRILICIOUS WL New Member

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    Legend, thanks for that :)
    I'll have a look at em when I finish work tonight at midnight.
    Dave.
     
  6. richardpalinkas

    richardpalinkas Blown Alloytec

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    Also check my drag videos, you can barely hear my car compared to the others I race. Just search my user name in the tube
     
  7. nicosped

    nicosped New Member

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    just wondering if anyone can shed some light
    ''Our latest dyno tests resulted in 422hp at an astonishing 8750rpm using ported heads, aftermarket camshafts and a free-flowing exhaust. In this test, the CPR6 added a whopping 161hp.'' does anyone now how much or who can port heads and get aftermarket cam shaft
     
  8. richardpalinkas

    richardpalinkas Blown Alloytec

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    That would be performance manifolds that does that package. Although they use a motec ecu to run that engine. Mace are currently making cams though
     
  9. Blackstar

    Blackstar New Member

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    Hey there, really new to the forums...hoping not to piss anyone off with this post

    I've got a SVZ with the standard alloytec, just wondering what mods people have done, whilst keeping it NA. What sort of power numbers are realistic with this engine? I have had some people telling me to leave it alone, some people saying you can get good figures with the alloytec and someone even described it as economic suicide....

    From what I can see the CPR6 is pretty much a standard...

    any advice is much appreciated

    rock on,
    Jimi
     
  10. Shooter03

    Shooter03 Nek Minnit

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    A nice CAI and cat back exhaust is a go'er. Maybe some Mace manifold spacers. There's nothing like a good old oil change with some real decent oil and spark plug change. Clean the MAF and when you do the spark plugs/manifold spacers clean the throttle body out and the manifold. Should run pretty good if you do all that.
     
  11. impulsive

    impulsive Alloytec Racing

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    To be completely honest, every engine mod i have done or seen has caused drama's. If you want a nice car, thats reliable and looks nice, id be doing wheels, Suspension, Tinting and stereo. The alloytecs are capable of making power, but this comes at a cost. Reliability and a big budget.

    If you choose to mod, do it wisely and you wont be able to do it on a budget. Spend the money and do it properly
     
  12. impulsive

    impulsive Alloytec Racing

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    This is general maintainence that should be done around service time, all good advice but be careful what products are used.
     
  13. Shooter03

    Shooter03 Nek Minnit

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    True, although a CAI and exhaust are not. Bosch double plat plugs, a fully synthetic oil (if you can afford it) OEM air filter and oil filter if your not going the CAI way, also make sure you use actual MAF cleaner to do the job of cleaning the MAF and a can of carby cleaner to do the manifold.
     
  14. Blackstar

    Blackstar New Member

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    Cheers guys, what sort of power are most people getting from their alloytecs?

    Any idea what is realistically possible?
     
  15. impulsive

    impulsive Alloytec Racing

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    all depends on what you have to spend
     
  16. Shooter03

    Shooter03 Nek Minnit

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    Considering it is only a 6 and I'm hauling around a wagon with 3 kids and my wife mine goes real nice. Never had it dyno'd but I am looking into a tune so in the future I'll have a idea.
     
  17. Venom80

    Venom80 New Member

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    Im not sure if that is 100% true as I had mine done last year by my uncle and it took 4 credits to unlock it have a look on vcm any ways they have all the listing and how many credits unlock what. ;-)
     
  18. richardpalinkas

    richardpalinkas Blown Alloytec

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    I just had a new ecu put in my car and needed the ecu to be unlocked again so that my charger tune could be loaded onto it. Cost me 2 credits at 75 each. 150 for both credits. This is a new price that was only done roughly 2 months ago.
     
  19. Venom80

    Venom80 New Member

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    Thats sound's a bit better because when I had it tuned last year and checked the HP tuners web site it was four credits to unlock.It's about time they changed it, it was one of the few computers that costed so much to unlock.
     
  20. tHe_sTiG

    tHe_sTiG New Member

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    Hmmm interesting to take a look at this sticky thread again. Been terribly busy for the past several months, no time for my car at all... I'm thinking the main performance-killer for the V6 Alloytec is the extremely high gear ratios of the 4-speed gearbox... I mean come on flat out and in 1st gear till 80km/h till the next gear?! I'm sure acceleration would be greatly improved just by lowering the gear ratios... how much would that cost?

    I know ECU changes are a good idea, but I don't understand... what exactly does it do to the car and how does it give an increase in performance?
     

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