crf450 twin vs single pipe

Does anyone have any dyno numbers on a crf450(13-14) with a single sided pipe on it? All the pipe reviews I have seen are with dual after market pipes and the improved performance is not that much, so I am wondering what numbers a single sided pipe would do. 

Not sure about dyno numbers, but a single will be cheaper and weigh less.

Im just trying to figure out if it would be worth the money to buy a full single sided system as I can get a slip on system for the dual exhaust extremely cheap. 

Buy,a cam& hi-comp piston ,remap or port it remap or just remap all much better than a pipe.A pipe does almost zero power wise ,looks cool that's about it. 

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