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  1. T

    Electronic Bi-Modal Valves

    What if actually the muffler gapped down to 2.5" in piping after the 3" exit at the muffler? Any benefit there do you think or is it too late and the internal 3" exit is what matters?
  2. T

    Electronic Bi-Modal Valves

    This makes sense although I've also tried on my car the VE/VF1 dual outlet V8 mufflers (non AFM) which had a deep note and were quiet but they also droned. I guess the issue is though they were dual outlet not single? Literally the only muffler that is 100% drone free is the bimodal Holden...
  3. T

    Electronic Bi-Modal Valves

    Single outlet Just measured single 3" outlet at the muffler into Y piece twin 3" tips
  4. T

    Electronic Bi-Modal Valves

    Would have been fibreglass I think. Not sure how dense. Thinking about it another option is ripping open those mufflers and just jamming them full of packing actually. I want a quiet but deep and drone free note. It's like chasing a unicorn.
  5. T

    Electronic Bi-Modal Valves

    The design is 2.5" in and single 2.5" out straight through and baffled pipe all the way through. The muffler packing looks like a kind of thin metal straw like material. There was a small gap I had to seal in one of the mufflers which is how I saw that.
  6. T

    Electronic Bi-Modal Valves

    Ooft yeah ok. An exhaust shop would want $1500 to do that most likely or just not take the job on. I'm still running my VCM big barrel mufflers but might add some J pipes like this instead to clear the rest of the drone. Just need to get the measurements.
  7. T

    Electronic Bi-Modal Valves

    @RevNev re: your VF2 muffler customisation, how long would you expect this to take for a competent exhaust shop to replicate what you did for both mufflers, based on your experience? A day perhaps? Because exhaust mods are never finished :-) Thanks!
  8. T

    Large VCM rear mufflers on a VE/VF V8 - finally found some & the results are pretty great

    Here is a vid of the VF2 bimodals on the same system both shut then open at the end
  9. T

    Large VCM rear mufflers on a VE/VF V8 - finally found some & the results are pretty great

    The mufflers are about loud as the bimodal being shut at low throttle and idle, and it didn't go over 90db up to 3.5k rpm so it may be just how my phone's mic pics it up The mid pipe is the Xforce VF82kit So 1 3/4 long tube headers 3" exit to 100 cell cats 4inch body Again 3" exit to a 3"...
  10. T

    Large VCM rear mufflers on a VE/VF V8 - finally found some & the results are pretty great

    Yeah correct, juuust. When shut chalk and cheese & the bimodal is totally drone free. Could be needle in a haystack finding the information as to what was in these VCM mufflers however I did take this pic when there was a lip I had to reseal dunno if you can tell from what's in that? Or, when...
  11. T

    Large VCM rear mufflers on a VE/VF V8 - finally found some & the results are pretty great

    Muffler pics attached will get some vids of the sound of it soon!
  12. T

    Large VCM rear mufflers on a VE/VF V8 - finally found some & the results are pretty great

    Hi all As per @RevNev's suggestion at various points in this forum, I have finally found an extremely difficult to find set of large aftermarket rear mufflers, from an old RS Performance system (a rebranded VCM exhaust). My objective was to fit these large mufflers to achieve: a) A deep note...
  13. T

    What’s the best sized stall for my cam?

    Sounds like an old 202 on choke
  14. T

    What’s the best sized stall for my cam?

    It's worrying in 2023 that some tuners still seem to struggle with the VE/VF Commodore, for anything more complex than bolt on parts. Blows my mind that more customised gearbox and engine tuning for cams, stalls etc is this hard.
  15. T

    What’s the best sized stall for my cam?

    Isn't the purpose to ensure on cammed cars in particular they don't bog down, because camshafts push the power band higher in the rev range? Even on stock cars it's well documented LS engines aren't amazing under 3.5k rpm, it's why 3.27 or 3.45 diff gears are used to assist that The idea would...
  16. T

    What’s the best sized stall for my cam?

    If it's anything like my experience will be light and day going to a quality tyre
  17. T

    What’s the best sized stall for my cam?

    Interesting very different experience to where I'm at with my car. Although as I noted large high end tyres made a huge difference for me. And yes yes, mine isn't a LS3 :-p
  18. T

    What’s the best sized stall for my cam?

    Using foot brake stalling or just hammering the gas?
  19. T

    What’s the best sized stall for my cam?

    Dunno but I'm at those specs or better in my L77 sedan so it's close. I'm full bolt ons with tune, 3.27 LSD, 285 section PS4S rear tyres. King springs in the rear with towbar and full size spare. WOT from standstill no brake hold - zero spin. Light brake hold gets a chirp, need to stall it...
  20. T

    What’s the best sized stall for my cam?

    Well that mod list escalated lol No worries cheers I've already got a daily so more interested in following the path of those with mid sized cams, and then who went to a stally which these cars really need to get moving off the line
  21. T

    What’s the best sized stall for my cam?

    @daves8 did you ever follow through with this? Did oztrack ever come to the party with a quote?
  22. T

    W427 exhaust

    Hmm that just looks like the 2.5" system from a VE GTS unfortunately who has used every model type to attract more hits Hard to tell but reads like HSV used a 2.75" exhaust on the W427 And also amazing they used an OTR but then never again for VE3 onwards
  23. T

    W427 exhaust

    Curiosity question; has anyone ever seen a pic of the underbody of a W427 or even more sacrilegious with the exhaust system pulled out? Was scrolling through random stuff looks like the W427 basically laid the pathway for the entire aftermarket with its intake and exhaust set up in 2008... Read...
  24. T

    Xforce VF82 exhaust kit installed - product clearance issue or poor fitment?

    There you go! I had been meaning to ask Matt also whatever happened to this muffler for the commodores that I found. Xforce muffler with Helmholtz chamber included. Not sure if this was a prototype or if it's just vanished from sale. I've said the whole time I never understood why the...
  25. T

    Xforce VF82 exhaust kit installed - product clearance issue or poor fitment?

    Well in a thrilling (?) conclusion to this story I went to Xforce directly & had Matt the bloke that designed the system correct the fitment; seems my local exhaust shop did Friday arvo quality install job, who will be hearing from me soon enough. As you can see behind the slip joint its nearly...
  26. T

    Xforce VF82 exhaust kit installed - product clearance issue or poor fitment?

    Yeah apparently their catback systems come with it but the product VF82 and VF83 don't come with it... Weird
  27. T

    Xforce VF82 exhaust kit installed - product clearance issue or poor fitment?

    This was going to be my other question back to Xforce as they said they don't supply a brace with this system (But are happy to remove the factory one and bin it). Sorry its probably been debated elsewhere but was seemingly elusive in the search bar - what does the cross brace do, I assume its...
  28. T

    Xforce VF82 exhaust kit installed - product clearance issue or poor fitment?

    Indeed but a full manta stainless system is also $5.5k installed its insane what they charge. Sweet looking system though - it's basically a 3" version of the stock exhaust system design (i.e. front muffler included). And if you want bimodals its getting closer to $6k installed. This system I...
  29. T

    Xforce VF82 exhaust kit installed - product clearance issue or poor fitment?

    Cheers yep I agree. I won't mention the business as it's a well known and regarded business however I'll be discussing it with them mid next week after my suspension is in. Hopefully it's a matter of just spending more time adjusting the hangers and not something more serious... In which...
  30. T

    Xforce VF82 exhaust kit installed - product clearance issue or poor fitment?

    Lol I think this is my smoking gun Looks like a rubbish install job This is the install tutorial on YouTube of basically the same system from Xforce (same headers installed into a 7 series catback) clearly showing the cats for example hang at most maybe 10mm below the rails My whole system is...
  31. T

    Xforce VF82 exhaust kit installed - product clearance issue or poor fitment?

    Open question to the seemingly few owners who have this system - does anyone have any pics to share on ground clearance? Mine is below. Is this expected with this system? I'm hesitant to ask the shop that fitted it to correct it unless I'm 100% its an install issue as they can just say "its...
  32. T

    VF Calais V V8 - way to firm up suspension without breaking the bank

    380mm F&R is a good height I reckon. No idea why it went to 400mm on the VF its ridiculous. Spoke to King I should have gone with the KHRL-152HD to start with to get to 380mm on my vehicle given towbar & full size spare. So the lesson is either pay a shop to manage it all for you (but accept...
  33. T

    VF Calais V V8 - way to firm up suspension without breaking the bank

    Extra thought of the day - how much fuel is in the tank I wonder when King did these measurements? Can't find that info anywhere either. I have a 3/4 tank. But measuring at half tank versus full say adds another 30kg of rear weight which is enough for another 7-8mm drop/gain pending where you...
  34. T

    VF Calais V V8 - way to firm up suspension without breaking the bank

    Makes sense thanks. Seems my options are now: SL HD in the rear L L HD Might call the suspension shop and ask what they can do
  35. T

    VF Calais V V8 - way to firm up suspension without breaking the bank

    Cheers RevNev yep I'd say you're correct. And yep had superpro strut tops fitted at the front so probs an extra couple of mm there which is prefer tl be honest. Have you tried the HDs before at the rear? I know it increases spring rate over standard but then Kings materials say it won't...
  36. T

    VF Calais V V8 - way to firm up suspension without breaking the bank

    Fronts are correct at 374mm, rear is about 353mm so waayy to low. I fitted my spare wheel/tyre to one side and drove it 5km to reset the spring as I find it sits higher without doing this when changing wheels. That added 12mm of height. That is because I'm using 245/40 tyres on the 9.5"...
  37. T

    VF Calais V V8 - way to firm up suspension without breaking the bank

    This is what mine is looking like apologies on the shrub in the way can't find a good spot at the moment for a clear side on pic! You can see the rear is probably 15-20mm lower than the front not 5mm higher. Note rear tyres are 245/40 R19 on a 9.5" Senator rim so look stretched, trying to wear...
  38. T

    VF Calais V V8 - way to firm up suspension without breaking the bank

    Update; thanks for the advice! Settled on King KHFL-151SL on the front, and KHRL-152SL on the rear, which should give approx 375mm HTG and 380mm respectively. Paired it with Monroe GT sport shockies. Initial impressions; it's a very very good combination for both comfort and handling. Cuts a...
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