dcash5 Posted January 2, 2009 Share Posted January 2, 2009 I have often wondered how you change the JDM speedo to read in MPH, Who does this and how is it done?. Just for interest really Dan Quote Link to comment Share on other sites More sharing options...
cgomez1978 Posted January 2, 2009 Share Posted January 2, 2009 im not to sure but i think its done by a CPU Chip somewhwere not to sure though Quote Link to comment Share on other sites More sharing options...
IanS16 Posted January 2, 2009 Share Posted January 2, 2009 Are you asking because you need this done to yours or just because you want to know? It should be done when your car reaches the UK shores! Some info here of what is tested http://www.horizonsunlimited.com/hubb/t ... ting-38256 Quote Link to comment Share on other sites More sharing options...
Stew Posted January 2, 2009 Share Posted January 2, 2009 Speedos are never a good idea...... Ooops, just realised you're talking about a different Speedo. Quote Link to comment Share on other sites More sharing options...
IanS16 Posted January 2, 2009 Share Posted January 2, 2009 Speedos are never a good idea...... Ooops, just realised you're talking about a different Speedo. Quote Link to comment Share on other sites More sharing options...
marzman Posted January 3, 2009 Share Posted January 3, 2009 Speedos are never a good idea...... Ooops, just realised you're talking about a different Speedo. Ha ha, i didnt get it till the snorkel smiley! Quote Link to comment Share on other sites More sharing options...
dcash5 Posted January 3, 2009 Author Share Posted January 3, 2009 just for interest, anybody got any idea's? Quote Link to comment Share on other sites More sharing options...
Adam@Z1auto.com Posted January 3, 2009 Share Posted January 3, 2009 I've got my US spec original speedometer cluster for sale if you like I no longer need it, as I currently run a 2008 spec unit (9000 rpm - actually will be selling this one soon too! Quote Link to comment Share on other sites More sharing options...
steve3000 Posted January 4, 2009 Share Posted January 4, 2009 I have often wondered how you change the JDM speedo to read in MPH, Who does this and how is it done?. Just for interest really Dan If you're driving an imported car in the UK it should be reading in MPH already - the conversion is done prior to the SVA test by the importing company, as it is a requirement that imported cars are converted to read in mph in order to pass the SVA. Two usual methods of doing this to a new (unconverted) import: 1) swap the jdm cluster for a UK cluster so the speed signal is interpreted by the UK cluster and displayed in mph (advantages: looks professional, disadvantages: very expensive to buy a new cluster (££££!), second hand clusters would need to reset the mileage counter or use the mileage from the donor car, also you'd need to replace the centre digital speedo/temperature gauge with a UK one, or this will continue to show speed in kph) 2) fit a kph-mph conversion chip to the ecu speed signal output wire and pop a piece of black tape over the 'K' of the 'KMPH' sign on the JDM cluster. This chip reduces the kilometres per hour signal frequency to match miles per hour (divides it by 1.4 approx). (advantages: quick to install and effectively converts the digital centre gauge too, so no need to change that - and as a bonus some conversion chips include a speed-restriction delimiter so if you have one of these you won't be limited to 112mph, disadvantages: the piece of tape of the 'k' of the 'kmph' looks a bit amature, and the digital centre gauge still shows the 'kph' symbol even though the speed is in mph) Steve Quote Link to comment Share on other sites More sharing options...
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