BMW software remap vs ECU chip upgrade
Have an r55 Clubman S needing a tune. There are problems on first/cold start with erratic revs and power availability. Turbo and timing chains have been inspected all ok.
BMW claim that a full remap and upgrade to latest version of software MAY fix the issue at $220 (at least) or I can get a chiptorque ECU reflash at around $900 from a Euro specialist tuner here in Sydney.
BMW's main selling point is that this software update will reprogram all the ECU's in the car, not just the engine ECU - I'm not sure if that's required or if they are just trying to sell me on it.
Alternatively, the ECU reflash gives me near JCW like performance outputs (and hopefully will fix the issue).
Anyone had experience with similar issues? What did you do?
Is there any other electronic aftermarket tune available in Australia?