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help find a happy medium between performance and fuel econ.

Discussion in 'VT - VX Holden Commodore (1997 - 2002)' started by Fritz_, Apr 3, 2007.

  1. Fritz_

    Fritz_ New Member

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    Hey guys.

    I'm trying to achieve a happy medium regarding the best performance possible while maintaining the best fuel economy I can get...

    I drive a '00 VT series II wagon.

    Of course I'd like my car to go as best as it can, but im a musician for a living and do ALOT of driving therefore I go through alot of petrol as it is. In the last week ive gone to Tamworth and then to Goulburn (I live in the blue mountains). My cars got 220k's on the clock.

    Anyway......

    Obvious ones to improve performance (slightly) while being nice with fuel ..

    K&N air filter
    Cold Air Intake....
    haha Oh yeah, window tint so I hopefully dont use my air con as much hehehe

    Anything else ?? while trying to keep good fuel econ in mind.. Thanks
     
  2. JD

    JD Donating Member

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    Granpa driving, the best option.
     
  3. mattman

    mattman New Member

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    Some people say a free flowing exhaust is good, but I doubt you'll ever see ~$300 in savings.

    Don't bother with K&N filter, a new paper one is just as good plus you don't have to re oil it and clean your MAF when it gets clogged with oil (and hence giving screwed readings and poor economy).
     
  4. minux

    minux Infidel Bear

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    An exhaust is one of the better options. As for K & N i kind of agree, i only went K & N so i didnt have to buy a new filter all the time, as for the MAF, well i have a MAFLESS tune soooo :)

    One of the BEST things you can do is have your car retuned, its amazing the difference it can make.
     
  5. 50LTRv8

    50LTRv8 Member

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    One of the best ways to save fuel is to turn the aircon off when you don't need it, I get an extra 100km out of my falcon just by doing this

    50LTRv8
     
  6. ephect

    ephect Donating Member

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    replace your O2 sensors if they havent been replaced whilst u've had the car, which is most likely
     
  7. muney

    muney On Da West Side

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    can anyone tell me where the o2 sensors are on the VT..are there 1 or 2..and are they easy to replace..would like to know as i have similiar klms to the OP
     
  8. Not_An_Abba_Fan

    Not_An_Abba_Fan Exhaust Guru

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    There are 2, one on each engine pipe just below the exhaust manifolds.

    Fuel economy is directly related to your right foot. You can get roughly the same with no mods as with around town. On the highway is a different story, Extractors, 2 1/2" free flowing exhaust and a lean cruise tune will give you gr8 economy if you do mostly 80km/h + driving.
     
  9. Jesterarts

    Jesterarts Your freedom ends where mine begins

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    Yeah, im interested in the effects of replacing the O2 Sensor...
    How much are they? Is there much economy to be gained? My car has 120,000 on it...
     
  10. Jon Z

    Jon Z New Member

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    There will be a noticeable difference if they are flogged. If they are the car will be running in open loop mode and it will set the air:fuel ratio to 14.7:1, to be on the safe side. If they have never been changed then its worth the $70-80 each and it only takes 5 mins to do.
     
  11. Not_An_Abba_Fan

    Not_An_Abba_Fan Exhaust Guru

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    Ebay have them for $55 plus $5 postage ATM. If the sensor is buggered it will give you a code 13, 44, 45, 63 or 64. Or a couple of them.
     
  12. holden007

    holden007 VRII

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    i reckon factory stock will give the best economy and your foot!
     
  13. EXCESSV

    EXCESSV New Member

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    like minux said....a tune is the way to go...even on a stock car:thumbsup:
     
  14. Jesterarts

    Jesterarts Your freedom ends where mine begins

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    like as in a dyno tune?
    how much would that cost on my VX v6 Ecotec?
     
  15. krazyboris

    krazyboris New Member

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    Bluechip tuning are offering some GREAT prices on tuning at the moment, check out this link:--http://forums.justcommodores.com.au/showthread.php?p=570185#post570185
    As for good economy running, make sure your engine is tip top, no leaky gaskets, good oil etc. Proper tire pressure's (always makes sense!), consider tuning, pricey, but worth it (so im told :) ). Plan your trips in your car to cut down on double-driving. Running a good fuel is supposed to help. Make sure your not carrying extra wieght unless you need to.
     
  16. Misaprop

    Misaprop black betty

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    My car (extractors, GTS CAI, K&N, gts cai pipe) has significantly better economy that my dad's car (which is exactly the same, but stock). This is testing the car over several weeks of constant driving by him.

    Although he is still not convinced that the money I spent on the mods is worth it. I think he secretly knows that I will let him borrow my car when he wants and doesn't need to fork out his own cash for the same mods.
     
  17. webwombat

    webwombat New Member

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    use PULP fuel only - gain extra 50kms per tank - thats me
     
  18. pablo

    pablo Donating member

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    Was a 1997 vt v6 wagon
    I re-tuned my right foot, at no cost, and I regularly get, driving around the suburbs, 12.28liters per 100 k's, (8.14 K's per 1 liter) or in the old money 23 miles per gallon! thats 600k's per tank full. The distance to empty on the trip readout on dash regularly goes to 600 or even a bit higher on a full tank. Completely stock 1997 VT. Fuel standard ULP. (didn't notice any appreciable differance in economy with premium fuel, not worth the extra expence) Engine oil 20-50 Valvoline, I keep the tyre pressures around 34-35psi. The mate drove from Adelaide to Darwin and back and got just under 7.4 litres per 100 K's. The distance to empty readout went to the max. 1000 when he filled up at the end of trip. Stocky 1998 VT on cruise control all the way.

    Pablo
     
  19. danja

    danja Swerves for gay koalas

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    When I picked up my VT it had 160,000 on the clock, and I'd do 14-16L/100 regularly (even if i granny it I'd be VERY lucky to get high 13's) after doing O2 sensors I'm down to 12-13. I've NEVER hit 14 since, even in the weeks where I drive it hard (and I work a day job, so I've got two sessions of peakhour city driving to tackle Mon-Fri).

    I've never done the math, but over the last 30'000kms I've probably saved the $150 odd it costed to do the O2's. Easy to change yourself, and I found the throttle response was greatly increased. Clean your MAF and throttle body as well and its like driving a new car!

    Edit:
    My sensors were NOT throwing any codes when I changed them, I'm guessing they have to be REALLY shot to chuck a code, but I've heard 80,000-120,000 is about the recommended service interval, so unless you know they've been done recently, go for it!
     

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