Mazda Rotary Club

Cars by Model Type => 3rd generation RX-7's => Topic started by: ds2000 on July 27, 2004, 01:26:53 PM

Title: MPH Conversion
Post by: ds2000 on July 27, 2004, 01:26:53 PM
Hi all,

Just wondering how much of a pain in the butt it is to convert from KPH to MPH?

I imagine its a little box of tricks that changes the pulses into the speedo but what about the digital mileage?

I don\'t want a 7 that reads 100,000 miles :)

Ta

Dave
Title: MPH Conversion
Post by: davehg on July 27, 2004, 02:25:19 PM
hi

ive recently done my own sva conversions, its a black box with about 6 wires that you need to tap off the wiring loom, cut some wires and screw a couple to the speedo. it sounds worse than it is. i see your only in wales so depending on how far away you are i could always give you a hand if you get stuck.


dave
Title: MPH Conversion
Post by: Wav on July 27, 2004, 02:45:18 PM
Yeah to change the speedo reading is fairly easy, just a black box of tricks for about £40. You can change the mile o-meter but it may cost you at least £100 and I\'m not sure of anyone that has actually had it done, only people who have had quotes. Hopefully someone who has had the change made will be able to confirm.

Regards, Paul:)
Title: MPH Conversion
Post by: ds2000 on July 27, 2004, 03:05:29 PM
Thanks guys,

Dave - I\'m quite a bit from Bristol, I do have an aunt down there so it could be an excuse ;), I\'m quite handy when it comes to cars so hopefully I should be alright (thanks for the offer though!), I recently did my (now sold) prelude:

(http://www.prelude.ndo.co.uk/r-net/Writeups/ElectroDash/testingnewgauge.jpg)

I\'m assuming the RX box is similar in size to the Prelude\'s one? (little blackbox on top of the dash)

I take it the mileage is stored on an EPROM and needs reflashing?
Title: MPH Conversion
Post by: davehg on July 27, 2004, 03:32:15 PM
no the rx box is the sixe of a match box and the wires dont have any connectors on them.
Title: MPH Conversion
Post by: davehg on July 27, 2004, 03:49:14 PM
no the rx box is the sixe of a match box and the wires dont have any connectors on them.
Title: MPH Conversion
Post by: ds2000 on July 27, 2004, 03:51:21 PM
I think your possibly looking at the silver box, its the small black one sitting on top of the dash, thats prolly about matchbox size - not that it really matters :)