Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

28 days until TUNE (advice on E85 and supporting mods please)

Discussion in 'VF Holden Commodore (2013 - 2017)' started by dsuth77, Sep 1, 2014.

Thread Status:
Not open for further replies.
  1. PIR4TE

    PIR4TE Banned

    Messages:
    2,747
    Likes Received:
    58
    Trophy Points:
    0
    Joined:
    Mar 15, 2011
    Location:
    AWOL with Ari
    Members Ride:
    Black Pearl
    There's not 200 hp difference between them stock!? L77 with 13:1 comp on e85 is in ball park, cam gets same as that guy's tuned F6.
     
  2. arronm

    arronm Active Member

    Messages:
    827
    Likes Received:
    120
    Trophy Points:
    43
    Joined:
    Dec 15, 2008
    Location:
    Perth
    Members Ride:
    FPV F6 VF Redline WGN
    Is that all you have to offer after being on here for 3 years. Shame Shame.

    Anyrate I am itching to get my VF tuned , cant wait. It just gets better and better. What did make a huge difference was the diff change from 2.92 to 3.45.

    Maybe after the tune it may even be able to spin the wheels.
     
    VE_CalaisV8 likes this.
  3. Grennan

    Grennan Slayer of Stupid Threads

    Messages:
    2,512
    Likes Received:
    69
    Trophy Points:
    0
    Joined:
    Mar 13, 2007
    Location:
    Glen Waverley, Victoria
    Members Ride:
    VE SSV G8 Sportswagon
    I wouldnt expect blow the doors off difference like you do with the I6T, but it does make a nice difference. Depending on what mods already done, the power shift is really impressive.
     
  4. arronm

    arronm Active Member

    Messages:
    827
    Likes Received:
    120
    Trophy Points:
    43
    Joined:
    Dec 15, 2008
    Location:
    Perth
    Members Ride:
    FPV F6 VF Redline WGN
    Yeh the VF wagon is great. So far I just put bimodal mufflers on (always open) and got a tune. He recalled my speedo for the diff change , turned off AFM, firmed up the gearbox shifts and tuned.

    Picked up about 40rwkw. Now I have OTR, HSV headers and cats and 2.5 inch cat back. Hope to pickup another 20rwkw. Either way its the gains I am interested in not the final numbers.

    The extra power and diff change has really changed the character of the car. I really really enjoy driving it. My F6 it manual so the auto makes a nice change..
     
  5. torana355

    torana355 Member

    Messages:
    889
    Likes Received:
    1
    Trophy Points:
    16
    Joined:
    Mar 24, 2009
    Location:
    Sydney
    Members Ride:
    VE SERIES 2 MY11 SSV A6 in IVY GREEN
    A 40rwkw gain from just a muffler change and tune... Sounds like a lot me. I got a 25rwkw gain from a OTR, Catback and Tune, i expect another 20rwkw gain when i get cats and extractors.
     
  6. arronm

    arronm Active Member

    Messages:
    827
    Likes Received:
    120
    Trophy Points:
    43
    Joined:
    Dec 15, 2008
    Location:
    Perth
    Members Ride:
    FPV F6 VF Redline WGN
    Can only go on the dyno graph for before and after. We did change fuel to P100. Driving it after the tune , was a huge difference so I would believe the numbers.
     
  7. Grennan

    Grennan Slayer of Stupid Threads

    Messages:
    2,512
    Likes Received:
    69
    Trophy Points:
    0
    Joined:
    Mar 13, 2007
    Location:
    Glen Waverley, Victoria
    Members Ride:
    VE SSV G8 Sportswagon
    Sounds a little on the happy side, but meh.

    I agree, diff gears are the one of the biggest changes to how the car feels and dont know why more people dont do them sooner.

    Im looking to go 3.27 soon.
     
  8. arronm

    arronm Active Member

    Messages:
    827
    Likes Received:
    120
    Trophy Points:
    43
    Joined:
    Dec 15, 2008
    Location:
    Perth
    Members Ride:
    FPV F6 VF Redline WGN
    Yeh, I thought about 3.27 but worked the RPMs out and 3.45 from 2.92 only raises the rpm in 6th at 100ks by 200rpm. But fuel isnt an issue for me as its my company car with a fuel card.

    Go the 3.45, you wont be disappointed. I changed mine the first week I got the car.
     
  9. PIR4TE

    PIR4TE Banned

    Messages:
    2,747
    Likes Received:
    58
    Trophy Points:
    0
    Joined:
    Mar 15, 2011
    Location:
    AWOL with Ari
    Members Ride:
    Black Pearl
    Bit on the grouchy side I thought!

    Get the trutrac too, it's well worth it :yarr:
     
  10. torana355

    torana355 Member

    Messages:
    889
    Likes Received:
    1
    Trophy Points:
    16
    Joined:
    Mar 24, 2009
    Location:
    Sydney
    Members Ride:
    VE SERIES 2 MY11 SSV A6 in IVY GREEN
    If accurate that is a bloody nice increase, who was the tuner?
     
  11. Grennan

    Grennan Slayer of Stupid Threads

    Messages:
    2,512
    Likes Received:
    69
    Trophy Points:
    0
    Joined:
    Mar 13, 2007
    Location:
    Glen Waverley, Victoria
    Members Ride:
    VE SSV G8 Sportswagon
    Im a a grouch on the best of days.

    TruTrac will have to wait a little while :(
     
  12. dsuth77

    dsuth77 Member

    Messages:
    59
    Likes Received:
    0
    Trophy Points:
    6
    Joined:
    May 18, 2014
    Location:
    melbourne
    Members Ride:
    VF SS A6 UTE
    Its been a very interesting day! I won't be posting anymore updates until the car is sorted (approx 1 - 2 weeks depends on when I can get days off work)

    PIR4TE I've pmed you.
     
  13. PIR4TE

    PIR4TE Banned

    Messages:
    2,747
    Likes Received:
    58
    Trophy Points:
    0
    Joined:
    Mar 15, 2011
    Location:
    AWOL with Ari
    Members Ride:
    Black Pearl
    278 RPM is closer to 300 than 200 RPM, your math sucks. Stock in 6th is 1531 RPM, with a 3.27 diff is 1714 RPM, but 3.45 is 1809 RPM. Sure can get a second hand stock manual diff cheaper them 3.27 HSV but is false economy and unless you support the engineering to rev the **** out of your car the performance sucks too.
    Too low & too slow, lots of research on here regarding ideal gearing for our car, 3.27 is the fastest and most economical, don't get conned into 48kph first gear, 80k in second and knackering your speed such that your engine wears quicker (18% more at highway) for no good reason apart from the abundance of 3.45 diffs available as throw aways from stock manuals.
     
  14. arronm

    arronm Active Member

    Messages:
    827
    Likes Received:
    120
    Trophy Points:
    43
    Joined:
    Dec 15, 2008
    Location:
    Perth
    Members Ride:
    FPV F6 VF Redline WGN
    Must be a youngster and not remember the days of 1 to 1 and 4.11.

    Economical. Ha. If thats what you what better get a hyundai XL.
     
  15. torana355

    torana355 Member

    Messages:
    889
    Likes Received:
    1
    Trophy Points:
    16
    Joined:
    Mar 24, 2009
    Location:
    Sydney
    Members Ride:
    VE SERIES 2 MY11 SSV A6 in IVY GREEN
    On the street 4.11's are great with a 3/4 speed box, not so great with a 6 speed when your first gear only goes to like 20kph. You also have to take into account the loss in time from changing gear more frequently. For a track car the 4.11's would be a great choice but for a street car with a modern 6 speed gearbox its overkill imo.
     
  16. arronm

    arronm Active Member

    Messages:
    827
    Likes Received:
    120
    Trophy Points:
    43
    Joined:
    Dec 15, 2008
    Location:
    Perth
    Members Ride:
    FPV F6 VF Redline WGN
    Well car is in for a tune. Using 98 this time as no more P100 soon. Expecting to see 260 - 270rwkw. A gain from stock of 50-60 rwkw. Should drive real nice. We discussed a supercharger kit. So maybe next year I may consider it. And at the same time get rid of the AFM engine internals.
     
  17. revster

    revster Active Member

    Messages:
    541
    Likes Received:
    218
    Trophy Points:
    43
    Joined:
    Jun 22, 2014
    Location:
    Adelaide
    Members Ride:
    30th Anniversary HSV Senator (Gone) MY19 Golf R
    Mine goes in for a tweak next week for the same reason. Probably not needed but should only take one run.
     
  18. christov

    christov RFFN RFFR

    Messages:
    472
    Likes Received:
    6
    Trophy Points:
    18
    Joined:
    Mar 30, 2014
    Location:
    Melbourne
    Members Ride:
    VF Redline, BMW M4 Coupe, Harley V-Rod
    So a tuning question, my cars going in on the 21st for a Walkinshaw pack - otr, full exhaust and tune (no flaming it's my decision). They have asked that I bring it in with about 15 litres of E-85 in it, so they can optimize the tune for that, then drain it and do the same on 98.

    My question is, should I expect to see more power from the E-85 tune compared to the 98 tune? Or does it not work like that.
     
  19. PIR4TE

    PIR4TE Banned

    Messages:
    2,747
    Likes Received:
    58
    Trophy Points:
    0
    Joined:
    Mar 15, 2011
    Location:
    AWOL with Ari
    Members Ride:
    Black Pearl
    That's fantastic Chris, I was told the tune was 98 only so that changes my take on it a little. Yes it does work like that. Primarily at stock compression the effect of e85 is more torque at lower to mid range RPM, and basically add more timing without any adverse effect. If they were bold enough it can run quite lean and still not knock with a 100°c exhaust temp margin. So yeah a savvy tuner can eek out more performance from GenIV using ethanol over petrol.
    How much exactly depends on the efficiency of their other mods but solid 6%, then with rockers, manifild, long throw Tri-Ys up to 10% over 98. The more efficient your engine is low to mid range will determine the improvement. Main thing is it runs cooler and better by providing greater temp and knock margin in the tune.
     
  20. blackve76

    blackve76 Well-Known Member

    Messages:
    1,580
    Likes Received:
    365
    Trophy Points:
    83
    Joined:
    Feb 9, 2013
    Location:
    there
    Members Ride:
    VE SS ute 360rwkw N/A, 2016 VF2 SS M6
    Quite a few have done the HSV header and seen almost no gain on the dyno over cast jobbies. Unless its a cost thingy 4>1's and nice cats and the go, 6L likes to push some air with that big intake valve

    50>60kw gain is cam stuff

    I had 220 stock got 257 with 1 7/8 headers 100cpi 3" cats and 3" xforce in a manual so almost 40kw gain. Funnily put a KPm exhaust on and lost about 5 kws when I had cam heads etc was 360rwkw then ran a 355rwk and a few 350's
     
Thread Status:
Not open for further replies.

Share This Page