jusie Posted October 1, 2004 Share Posted October 1, 2004 Just thought I would get an idea of what everyone seams to be getting miles per gallon on their supes. Mine is an auto TT not much done to the engine except an induction kit and blow off valve but the miles per gallon i seam to be getting is frightning only 10 miles to the gallon is this right or does my engine need a tune? Thanks for any replies Quote Link to comment Share on other sites More sharing options...
Jake Posted October 1, 2004 Share Posted October 1, 2004 I always get just under 300 miles from full tank to yellow light. I've worked it out in the past that it's just under 20mpg. Most of my driving is on the motorway though. Around town it's much worse. (Decatted Auto RZ) Quote Link to comment Share on other sites More sharing options...
Muffleman Posted October 1, 2004 Share Posted October 1, 2004 I work on the 'if I don't know, then it can't be illegal' principle. I know the mpg is bad, so I just don't work it out For the same reason, I haven't weighed myself since my wedding day Matt Quote Link to comment Share on other sites More sharing options...
Faith Adopter Posted October 1, 2004 Share Posted October 1, 2004 Not sure about actual mpg but the equation I use is: The amount of £ in petrol, times by 10 / 2 = how many miles/range (£10 X 100 / 2 = 50 miles) Mines a 93 GZ auto (2nd cat removed) with K&N replacement panel (78k miles) PS How do you tune these engines? (only my exhaust gasses do smell of petrol pretty strongly) Quote Link to comment Share on other sites More sharing options...
terribleturner Posted October 1, 2004 Share Posted October 1, 2004 Originally posted by Muffleman I work on the 'if I don't know, then it can't be illegal' principle. I know the mpg is bad, so I just don't work it out Same here. I think it costs me something like £50 every 6/7 days, which i guess is around the 250 mile mark Quote Link to comment Share on other sites More sharing options...
Clarkey Posted October 1, 2004 Share Posted October 1, 2004 My TT is decatted running at 1.2Bar ... and running the car off-boost .. with the occassional stint ... I've got 305miles. And that's with the fuel gauge 1/3 between Quarter & Empty. Was impressed as got an Walbro in there as well. Quote Link to comment Share on other sites More sharing options...
Jake Posted October 1, 2004 Share Posted October 1, 2004 Originally posted by Clarkey_Sparkey Was impressed as got an Walbro in there as well. Huh? What's that got to do with fuel consumption? Quote Link to comment Share on other sites More sharing options...
Clarkey Posted October 1, 2004 Share Posted October 1, 2004 probably absolutely nothing. i'm not a car techie ... but thought the different pump may have something to do with it - or maybe the walbro has more endurance than the stock. Quote Link to comment Share on other sites More sharing options...
jusie Posted October 1, 2004 Author Share Posted October 1, 2004 thanks guys i suppose its something i will have to put up with . Quote Link to comment Share on other sites More sharing options...
Scarface GTti Posted October 1, 2004 Share Posted October 1, 2004 Mine was doing 9mpg on a long run which was scary. But then it went into Chris Wilson for a thorough going through and it is now returning about 18 or 19 mpg with just general driving and giving it some now and then. Mine`s a J-Spec TT6 with Nur Spec, Apexi ind. and FCD running 1.2 bar. Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted October 1, 2004 Share Posted October 1, 2004 18-22 mpg is about standard. Maybe your new beasty needs a bit of a service. Quote Link to comment Share on other sites More sharing options...
Rich Posted October 1, 2004 Share Posted October 1, 2004 I put 30 quid of optimax in mine and get a regular 150 miles everytime unless I get the pedal to the metal. Quote Link to comment Share on other sites More sharing options...
kghelmet Posted October 1, 2004 Share Posted October 1, 2004 and i thought it was just me. mines in at jps soon for a service,lucky next weeks show is only 3 miles away:) Quote Link to comment Share on other sites More sharing options...
Zed Posted October 1, 2004 Share Posted October 1, 2004 I can comfortably get over 300 miles from a full tank of motorway driving at around 80-90 mph, The avc-r would normally be set at 0.85 bar in situation as opposed to 1.2 bar. I thought this was really bad, but that's because my daily driver, a 2.1 TD citroen Xantia can manage over 630 miles !!! on a full tank and this is before the yollow light comes on Quote Link to comment Share on other sites More sharing options...
carl0s Posted October 1, 2004 Share Posted October 1, 2004 at 60mph, using only cruise control for overtaking / slowing (i.e. never accelerating with the pedal manually) I get about 30mpg on the motorway. Cruise control accel/deccel is *very* gentle. Around town I'm probably getting 23-25 because I take it very easy. I generally keep below 2,000rpm, and force the box into overdrive at 30mph by lifting off the accelerator fully, then it cruises at about 1250rpm at 40mph. UK TT Auto, fully stock, except for 19" rims. Quote Link to comment Share on other sites More sharing options...
jusie Posted October 2, 2004 Author Share Posted October 2, 2004 Car has just had a service new iridium sparks and oil change what else should have i had done ? Trouble is i dont have a boost gauge so dont know what im running . It does seam to do better on longer journeys but to work and back im only getting the 10mpg but I dont really stop and start in traffic as its all lanes . Does this mean I could do with a good tuning? Quote Link to comment Share on other sites More sharing options...
fredm Posted October 2, 2004 Share Posted October 2, 2004 Only had my TT 3 weeks now but I have clocked up 1000 miles. I have been keeping a check on the mileage/fill ups and I reckon I'm getting about 24mpg, mainly town stuff but that includes one trip into the welsh countryside were the cars performance envolope was explored. Maybe I drive like my Gran. Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted October 2, 2004 Share Posted October 2, 2004 Dunno what tuning you can actually do as i am pretty sure the engine ECU handles the timing aspect. (ask the techie guys if its worth resetting the ECU) I suppose the likes of Thor can check your timing, and ignition and see whats going on inside the engine from his computer readouts. Also things like Lambda sensors being shot can cause overfuelling I beleive, as can exhaust systems that are starting to lose the material inside them and partially blocking them (well thats what the thor guys said to Timwildman when they dynoed his and it was running rich). Someone previously in this thread said that Chris Wilson sorted theirs out with a very similar sounding MPG figure. Even on full choke in traffic it should be returning at least 15mpg. Just for the pure financial side of it I would have it looked at as a 50% extra fuel bill will start to hurt eventually. Quote Link to comment Share on other sites More sharing options...
green_dragon Posted October 3, 2004 Share Posted October 3, 2004 I used to think I was getting about 10mpg when I first got my J-spec, but I thought the odometer was still reading in KMs. When I found out it gets converted to miles after import I felt much Happier with about 17mpg. Although once on a 300 mile motorway run with no boost at all, I got 34mpg Quote Link to comment Share on other sites More sharing options...
kghelmet Posted October 3, 2004 Share Posted October 3, 2004 i`ve just done 80 miles on two bottles of water and three bannanas,but i was on my bike:innocent: Quote Link to comment Share on other sites More sharing options...
mikeb Posted December 3, 2004 Share Posted December 3, 2004 Sorry to bring this subject up again, but I am seriously considering swapping my Celica for a Supra. I know it is probably a case of 'If you need to ask, you can't afford it', but can I realistically expect to get high 20's to 30 mpg on the motorway? My journey to work and back is 25 miles each way, and it's all motorway (except for a mile at each end). I am capable of driving like a grandad most of the time! If I do get a Supra it will be a UK 6 speed, incase that makes any odds. A lot of people on here have said that they can get 300 odd miles from a tank of fuel. I beleive the tank capacity is officially 80 litres on a UK spec, but how much do you find you need to totally fill up? For example, my Celica has an official capacity of 60L, but I have never managed to get more than 46L in it, even when the light has been on for 20 miles. Quote Link to comment Share on other sites More sharing options...
geoffvalenti Posted December 3, 2004 Share Posted December 3, 2004 Originally posted by jusie Does this mean I could do with a good tuning? Muusssst reesssist uurrggee tooo rrreeeeepppplyyy Quote Link to comment Share on other sites More sharing options...
tbourner Posted December 3, 2004 Share Posted December 3, 2004 Dunno about fuel tank capacity, I never fill mine right up. I got about 34 mpg on a long motorway haul, but that was before I went decat. Around town I now get bout 18 mpg. Have you checked your tyre pressures, Jusie? I'd get the O2 sensor checked first (or do it yourself it's pretty easy - dunno what your DIY confidence on cars is like). Quote Link to comment Share on other sites More sharing options...
geoffvalenti Posted December 3, 2004 Share Posted December 3, 2004 Originally posted by mikeb Sorry to bring this subject up again, but I am seriously considering swapping my Celica for a Supra. can I realistically expect to get high 20's to 30 mpg on the motorway? It all depends on how you drive it I suppose. *I* can't realistically expect those figures out of mine, but then again, I didn't buy it for its economy. I really can't resist giving it some stick from time to time, usually short bursts of hard accelleration, which is a lot worse for economy than sustained high(er) speed. Whenever I spy a bridge, or even better a tunnel, its hang back, change down, window open and floor it The sound gets me every time. If you drive it sensibly all the time, you may approach the above stated level of economy, but then it begs the question, why do you want one in the first place? Quote Link to comment Share on other sites More sharing options...
MrAngry Posted December 3, 2004 Share Posted December 3, 2004 I get 24mpg normally out of mine thats a mix of motorway and town. On a long motorway run I usually get around 27mpg and that's at more than 70 leptons usually:innocent: That was a public information broadcast by Shell Optimax Quote Link to comment Share on other sites More sharing options...
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