Most motorcycle engine tuners say that an engine performs better when it can breath better and has less limitation with the exhaust system.
So purely theoretical your Honda CBR150R should perform better when you remove the catalytic converter.
On the negative side, by removing the catalytic converter, you probably also loss some performance in the low to mid revving range...
If I take out my catalytic converter on my cbr 150r 2012 model, Will that give me more power ? Thanks Mikael