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Something different.....im back with a Lexus IS-F

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  • #16
    According to the Lexus tuning house that specialises in the IS-F (RR Racing in USA), these cars once tuned respond quite well to an E85 blend of around 25-30%. Much more than 30% and they start leaning out too much and the benefits drop off.

    So for the past month or two i have been experimenting with 10L-15L of Caltex Biofuel (rated between 75 to 85% Ethanol) mixed in with regular BP Ultimate fuel. There are no United service stations who sell E85 even remotely close to me, so the Caltex is what i have been using.

    With the E85 blend, the car feels more responsive and more lively under acceleration so it seems to do the trick. Only downside is the already woeful fuel consumption is even worse with the E85 in the tank (normally 16-18L per 100km around town, with the E85 blend its over 20L per 100km). The poor fuel consumption is exaggerated because this car only has a teeny weeny 65L fuel tank, so the gauge goes down quite quickly.

    I may decide to re-dyno the car with the E85 blend to see what the difference is.
    2017 Ford Fiesta ST the go kart

    2015 Audi SQ5 bi-turbo V6 TDI family hauler

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    • #17
      That's been my experience with e85 blend too.

      Surely fuel economy isn't an issue for the miles you do? I no longer worry now I'm at <10k/yr.
      carandimage The place where Off-Topic is On-Topic
      I used to think I was anal-retentive until I started getting involved in car forums

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      • #18
        Originally posted by brad View Post
        That's been my experience with e85 blend too.

        Surely fuel economy isn't an issue for the miles you do? I no longer worry now I'm at <10k/yr.
        Fuel economy isnt so much an issue as such as im lucky to do 100-150km a week normally, i guess i just get annoyed seeing the fuel gauge go down so quickly as this car is by far the worst car i have ever owned in regards to fuel consumption.
        2017 Ford Fiesta ST the go kart

        2015 Audi SQ5 bi-turbo V6 TDI family hauler

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        • #19
          Aaaand its for sale. Lovely car and i have enjoyed owning and driving it, but am about to refinance the mortgage so I have decided to sell the IS-F, buy something cheaper that I can tinker with and modify, and paying the balance off the house.

          VAG need to look at Lexus and pick up some reliability tips from them - this car has been faultless.

          2017 Ford Fiesta ST the go kart

          2015 Audi SQ5 bi-turbo V6 TDI family hauler

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          • #20
            Oh, I’m sure they have their own faults as well.
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            • #21
              The faults are mostly in the styling department [emoji848][emoji13][emoji85][emoji87][emoji86]


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              • #22
                Originally posted by Transporter View Post
                Oh, I’m sure they have their own faults as well.
                Im sure they do but they are few and far between. There is a guy in USA who has a 2008 model IS-F with 360,000 miles (580,000km) on it, and apart from normal maintenance, its needed only a new radiator and a coolant leak fixed!!

                Originally posted by tigger73 View Post
                The faults are mostly in the styling department [emoji848][emoji13][emoji85][emoji87][emoji86]
                I agree the current models are pretty ugly. That front end is a love it or hate it type of situation.

                Although I am biased, I think the IS-F is quite a smart looking shape overall. Good mixture of style and aggression.

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                2017 Ford Fiesta ST the go kart

                2015 Audi SQ5 bi-turbo V6 TDI family hauler

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                • #23
                  The styling is individual thing.

                  If you want reliable long lasting engine in the car, get TDI, they don’t have flaws the TSI have.

                  This Is What A 432,000-Mile Skoda Octavia Looks And Feels Like
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                  • #24
                    Originally posted by Transporter View Post
                    The styling is individual thing.

                    If you want reliable long lasting engine in the car, get TDI, they don’t have flaws the TSI have.

                    This Is What A 432,000-Mile Skoda Octavia Looks And Feels Like
                    Yes i have seen those videos previously - the condition of the internal engine components was quite impressive.
                    2017 Ford Fiesta ST the go kart

                    2015 Audi SQ5 bi-turbo V6 TDI family hauler

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                    • #25
                      Bye bye to the Lexus. Sold and now with its new owner in Sydney. Great car but ultimately i wanted a manual and turbo again. Also made the decision to "down grade" in terms of car value as i hardly drive the car anyway and we have the SQ5 for main driving duties. So all I need is a toy.

                      Welcome to the 2008 Subaru Liberty GT tuned by STI - a car i have always liked ever since they were first released. Found a one owner 2008 model which was in very good original condition and low km's. Full Subaru service history and no accident damage so hopefully it will turn out to be a good car to own for a few years. The original owner was well into his 50's and loves his cars so it's been well cared for.

                      I have always been interested in owning a turbo Subaru to see what they are like....so here goes.

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                      Last edited by Lucas_R; 23-08-2019, 03:48 PM.
                      2017 Ford Fiesta ST the go kart

                      2015 Audi SQ5 bi-turbo V6 TDI family hauler

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                      • #26
                        Looks like it is in good nic. Look forward to seeing how you progress with this one!

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                        • #27
                          Nice car! I like it.
                          Current: 2013 Candy White Scirocco R (Stage 3+ 272.2kW @ wheels) 2008 Yellow MK5 GTI Pirelli (Stage 1 custom tune 191.1kW @ wheels vs. 143.3kW dead stock) 1994 R33 Skyline (627kW @ wheels)
                          Past:2005 Orange RS Megane Sport Cup(165kW @ wheels) 2008 Yellow MK5 GTI Pirelli (Stage 2+ 212kW @ wheels 2009 Blue R36 Passat Wagon 2003 Silver ST246 Caldina GT-Four N

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