Crf450r 2013 emp or pc5?

Hey guys I have Crf450r 2013 with twin yoshi rs9 exhaust and airbox mods, which is the better computer you guys would Recommend? Is it just a simple plug in and away you go? Or do I need. Tim's take it to a dyno, the closest one is 6hrs away so I hope not haha,

it's my first 450 so I only want the best for it! And how do I go about purchasing one instead of eBay (don't really trust them) thanks in advance!

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