So while I don't know what the issue is currently, I love an excuse to upgrade.
My current SC is running a normal NA F23 gearbox. I am on the lookout for something to replace what I currently have when it breaks.
I am looking to see what was available and this came up on ebay
https://www.ebay.co....:Bk9SR7brgb3RZQ
Looking through old posts I can see the references to codes but not the XX reference above.
What is the general consensus? I don't want to go down the route of the 6 speed box, I've found the F23 to be pretty good. I already have a lightened flywheel and a clutch that has done around 20k miles so probably won't replace those. I will do the slave.