Originally Posted by aclver1
The 04 ecu can't be tuned by open source it's the only year it doesn't work. That is why I have the PP6, a tactric cable would have been a lot easier and cheaper.
04 isnt the only year that cant be opensource tuned, it's the last year that can't be opensource tuned. the 05 2.5RS and 06/07 2.5i can all be opensource tuned currently. the 08+'s are hit and miss last I heard, but only because they havn't had the chance to decode all the ECU versions used. So if you have an 08+ and a tactrix cable, pull your rom and send it to the RR guys so they can get it supported. unfortunately I dont think this is an option for pre 05 N/A vehicles.