from experience remapping again wont make it any better as in sense they will be doing whats already been done. saying that paul at RS tuning up leeds recons he can map most of it out. but ive yet to see a car thats had a the flatspot mapped out. mines running standard cat/sportcats and been mapped and the flatspot is still there. it seems to mapped out then after a few miles the ecu adapts to the new map and bam its back.