roscodav Posted September 22, 2003 Share Posted September 22, 2003 In the Import process they did a great job of changing everything so it shows MPH amd the trip and ODO tickup in miles hower they have not changed the reading which is obviously will look high if people think it is miles. How can I get it to read the correct milage, instead of the correct km? Thanks in advance Link to comment Share on other sites More sharing options...
Digsy Posted September 23, 2003 Share Posted September 23, 2003 I don't think you can. You could get a new odo and feed it with a pulse signal to clock it up to the correct value (don't overshoot, though). Apparently you cannot "roll around" your old one past 999999 either. TBH I'm a big advocate of leaving the odo reading in km. Much less confusing and probably less likely to make a prospective buyer suspicious when you resell. Link to comment Share on other sites More sharing options...
roscodav Posted September 23, 2003 Author Share Posted September 23, 2003 TBH I'm a big advocate of leaving the odo reading in km. Much less confusing and probably less likely to make a prospective buyer suspicious when you resell. [/b] True and I agree but as it has the km reading from before it is well over 100,000 and it is now ticking up in miles, (where is should be well down in double figures for miles I fear it will take explaining of why my paperwork says that it has been converted for miles and why I am saying that it is km, all they have to do is take it for a quick test drive and they could tell that it is adding miles. Which could result in.. for example, if they convinced themselves it was miles and not km then they might see 130,000 then instead of 85,000. suddenly my car is worth the same as push bike as it is showing 45,000 extra miles. Link to comment Share on other sites More sharing options...
TLicense Posted September 23, 2003 Share Posted September 23, 2003 I approached someone at TRL I think, who can do the normal conversions, who said it was possible to "back convert" but didn't really want to do it because it could all lead to cars being clocked. I didn't really see how it could. If he did the conversion (I really can't remember who it was I spoke to - well e-mailed) then surely it's down to his own consious. However I didn't want to push it as after all it's down to him. My point is however that it must be possible, so all we need to do is find someone that is willing to document and certify the full conversion. Someone reliable and honest. Link to comment Share on other sites More sharing options...
tDR Posted September 23, 2003 Share Posted September 23, 2003 It's a bit of a dodgy game to play because you are effectively tampering with the odometer. I was told by someone local that seemingly serves the majority of the local importers ( ) that they could take the odo for a couple of days and basically pulse it right round to the desired display for miles. Getting it to display the miles light indicator instead of km is the easy part, as documented on the http://www.trlperformance.com site. With my silver supra (which I imported myself), I chose to convert to read up in miles (and show mph, derestrict; all are functions of a decent chip for conversion) on the odo but just leave it at that and obtained a documented mileage certificate from the chip supplier to show the details of the car and when it was converted and also how to calculate it's current mileage from what was displayed - the difference between what's on the display and what that converts to in miles, so therefore for me it was 45,000 minus 17,000 = 28,000 miles (rough figures). This way you're not tampering with the odo and you have documentation to prove how you calculate the mileage and what's on display. I also had my original jap auction sheet and Jap service history to back this up. Indeed, jap imports don't leave Japan clocked - unscrupulous UK businesses clock them when they get here. Hope this helps, Brian. Link to comment Share on other sites More sharing options...
Guest mark_bond_007 Posted September 23, 2003 Share Posted September 23, 2003 My clocks got converted to MPH by the garage i bought my supra from, and this also de-restricted it, so i can cruise to 150MPH and beyond! However i did a test yesterday to see how accurate the speedo was, my dad has a brand new ford focus and was following me on the motorway, i was cruising for about 5 miles at a steady 80MPH, with my dad right behind. When we stopeed he said he had only been going 70MPH the whole time. I believe the focos speedo was right which pissed me off cos 10MPH difference is a lot, anyone else noticed this huge lack of accuracy?! Link to comment Share on other sites More sharing options...
SkyJawa Posted September 23, 2003 Share Posted September 23, 2003 Yup! I've got a road angel with GPS speed output. at 45 I'm really doing 40, 57 is 50, 68 is 60, 80 is 71, 95 is 85 and 100 is 90. At 30mph the clock reads just over, so it gets worse up the range. Compare this to my Pug GTI and its spot on all the way to 100. Link to comment Share on other sites More sharing options...
TLicense Posted September 23, 2003 Share Posted September 23, 2003 Recently a friend of mine bought a road angel (I think) radar detector, which could also display speed as calculated by GPS. This showed my speedo to be reading 10% low all over it's range. Somebody said a couple of days ago that the rev-counter will also read inaccurately. It's just one of those things you have to live with. Link to comment Share on other sites More sharing options...
Patrick_Devlin Posted September 23, 2003 Share Posted September 23, 2003 I've always wondered about that. The dealer I got mine from said the mileage was 60000 odd km and the odo read 93k I think. I understood that it clocked up km's in Japan and that it was now converted to read in miles. It still says km on the read out but does measure miles. But the problem of total miles being documented is still there. Link to comment Share on other sites More sharing options...
tDR Posted September 23, 2003 Share Posted September 23, 2003 To pass an SVA test the speedo has to be accurate to actual speed to within 10% on the optimistic side and it's an instant fail if it's at all pessimistic. Not sure how some of your cars got through the SVA test! Innacurate speedo's on jap imports are down to poor quality chips being fitted for conversion and / or not correctly zeroing the needle when fitting the chip and in my case 180mph speedo face. Link to comment Share on other sites More sharing options...
SkyJawa Posted September 23, 2003 Share Posted September 23, 2003 Thunder, I think mine has just got the mph stuck over the kph, would that explain my difference? And if so new dials would fix it? Link to comment Share on other sites More sharing options...
Jake Posted September 23, 2003 Share Posted September 23, 2003 Originally posted by ThunDeR Innacurate speedo's on jap imports are down to poor quality chips being fitted for conversion and / or not correctly zeroing the needle when fitting the chip and in my case 180mph speedo face. zeroing the needle when fitting the chip? Where do you think this chip goes exactly? It doesn't go inside the speedo mate. I don't agree with the "Innacurate speedo's ... are down to poor quality chips" opinion either. Link to comment Share on other sites More sharing options...
Jake Posted September 23, 2003 Share Posted September 23, 2003 Originally posted by HISUPE I think mine has just got the mph stuck over the kph, would that explain my difference? And if so new dials would fix it? That would only explain the difference if the needle has been refitted incorrectly (when the mph dial was installed). Changing the dials wouldn't make any odds. Besides, your speedo isn't any less accurate than any other Supra, it's perfectly normal - there's nothing to "fix" Link to comment Share on other sites More sharing options...
SkyJawa Posted September 23, 2003 Share Posted September 23, 2003 its irritating Link to comment Share on other sites More sharing options...
Tannhauser Posted September 23, 2003 Share Posted September 23, 2003 I did something incredibly dumb when I bought my import. Previous owner told me that the car was still reading in km and I never thought to check it. Discovered later that my supposed 48,000 miles is nearer to 70,000 miles as the odometer was, as far as I can figure, converted when it was first imported. My own fault - caveat emptor. Link to comment Share on other sites More sharing options...
tDR Posted September 24, 2003 Share Posted September 24, 2003 Originally posted by Jake zeroing the needle when fitting the chip? Where do you think this chip goes exactly? It doesn't go inside the speedo mate. I don't agree with the "Innacurate speedo's ... are down to poor quality chips" opinion either. If you read my post correctly you'd see I said "not correctly zeroing the needle when fitting the chip and in my case 180mph speedo face" I installed the chip and speedo face so of course I know it doesn't go inside the speedo Why do you disagree with innacurate speedo's being down to poor quality chips when this is what alters the original speed signal going to the speedo? :baa: Link to comment Share on other sites More sharing options...
tDR Posted September 24, 2003 Share Posted September 24, 2003 Originally posted by Jake That would only explain the difference if the needle has been refitted incorrectly (when the mph dial was installed). Changing the dials wouldn't make any odds. Besides, your speedo isn't any less accurate than any other Supra, it's perfectly normal - there's nothing to "fix" I think a UK spec Supra would be a good guage of the true innaccuracy of the Supra Speedo as it is unmodified. Any UK spec owners who have had their speed readings verified via GPS or similar care to comment? Link to comment Share on other sites More sharing options...
tDR Posted September 24, 2003 Share Posted September 24, 2003 Further to the above, it really needs to be a UK spec Supra on the std 17" wheels / tyres combo for a true reflection of accuracy. Link to comment Share on other sites More sharing options...
Guest Russ Posted September 24, 2003 Share Posted September 24, 2003 Hi Guys I bought my Supra in August fresh off the boat as it were. The company I bought it from got the speedo changed and the restrictor removed etc. I also got a certificate with the car which quotes the reading in km and the new mph reading they had changed the speedo to. I did see the speedo prior to conversion and it tallies with japanese paperwork mileage details, so im as sure as I can be about the correctness. However my point is that they seem to have managed to convert the speedo to read mph and also the odometer shows miles too! So it would appear to be possible! Thats my two penneth worth anyway! Russ Link to comment Share on other sites More sharing options...
Jake Posted September 24, 2003 Share Posted September 24, 2003 Originally posted by ThunDeR If you read my post correctly you'd see I said "not correctly zeroing the needle when fitting the chip and in my case 180mph speedo face" :baa: I correctly read what you posted but it seems that what you wrote wasn't what you meant. So what you meant to say was "not correctly zeroing the needle when fitting a 180 speedo face" was it? The chip has nothing to do with it. What you actually said was Innacurate speedo's on jap imports are down to poor quality chips being fitted for conversion and / or not correctly zeroing the needle when fitting the chip and in my case 180mph speedo face. The "and in my case 180mph speedo face" part of what you wrote implies that other cases of inaccurate speedos on imports are caused only by not correctly zeroing the needle when fitting the chip, that is incorrect isn't it? So who were you calling stupid? OWNED ! Link to comment Share on other sites More sharing options...
tDR Posted September 24, 2003 Share Posted September 24, 2003 You just 0wned yourself by proving your inability to accurately interpret a piece of written English. Silly boy. Link to comment Share on other sites More sharing options...
Jake Posted September 24, 2003 Share Posted September 24, 2003 Originally posted by ThunDeR You just 0wned yourself by proving your inability to accurately interpret a piece of written English. Silly boy. Mate that's bullshit. I'll tell you what, why don't you break down what you said in the same manner that I did and demonstrate to us how you were correct? No I didn't think you would. Link to comment Share on other sites More sharing options...
tDR Posted September 24, 2003 Share Posted September 24, 2003 Originally posted by Jake Mate that's bullshit. I'll tell you what, why don't you break down what you said in the same manner that I did and demonstrate to us how you were correct? No I didn't think you would. http://pages.prodigy.net/indianahawkeye/signs02/3.gif http://www.djpeters.pwp.blueyonder.co.uk/emotes/maxownage.gif http://urbanjunkie.macker.co.uk/smiles/Limp%2520Wrist.gif Link to comment Share on other sites More sharing options...
Jake Posted September 24, 2003 Share Posted September 24, 2003 BWAAAAHAHAHAHA ! Give it up dude, we both know you're wrong, you just can't bring yourself to admit it. You'll get over it in time. http://www.arbj98.dsl.pipex.com/owned.jpg Link to comment Share on other sites More sharing options...
tDR Posted September 24, 2003 Share Posted September 24, 2003 Nope, it's just that you're an............ http://www.kulthea.net/images/attentiongirl.jpg Link to comment Share on other sites More sharing options...
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