Tuning CDI unit with no rev limiter from NarakuDerestricts your scooter and makes it revvier. 2009 V.2 unit adds the extra few mph that a big bore kit doesn’tAttention! On some inductive rev counters (e.g. Yager 50GT) interference can occur with the rev counterUsing interference-resistant plugs can help this, but there may still be display issues