Ok so short story shorter, I kinda raced a 2nd Gen MX-5, lost tragically, and in the process I bounced of the limiter as I shifted from 1st to 2nd gear. It seems that the limiter is at 8k RPM. My Copen is a UK 659cc btw also the red line starts at 8K which happens to be where the limiter also lives. The reason I bring all of this up is because, I was wondering where the limiter would actually kick in, because looking at pictures of JDM Copen's, their red line is at 8.5K and I'm assuming their limiter is at Red line too? Anyway, how come JDM Copen's have 500 more RPM's to play with? Is it just an ecu thing? Why would they do that? And would it be possible/safe to install a jdm Copen ecu into a UK copen and get 500 more RPM?