This is a little trick used here in Japan for those with the Second Generation RX-7 whose OEM setup will not allow speeds over 180km/h. The standard way to get beyond this is to by a SLD by HKS, etc or through a ECU tune. Luckily, this is not necessary. With the removal of one screw on the back of your gauge cluster you have a free speed limit cut. This screw will be on the left hand top side when looking at the back of your gauge cluster. Above this screw is the inscribed marking `20000M 180K`.


all the info i got it from here
http://cgi.ebay.com/ebaymotors/ws/eB...tem=7917916912
i have a couple gauge cluster lay in my room, so i checked.
only s5 have have this screw both us and jdm verson
s4 didn't have this screw at all
just another penny

 

we do not have the speed limit on the North American versions.

 

thanks for sharing!

 

I've had my car over 180km/h at the track many times, not an issue for us in North America.

 

180km/h is the 112 courtesy limit right?

 

I had this problem a few years ago on my Infini when I took it to the dyno.

http://infini-fc3s.cyberosity.com/bl...d-limiter.html