Advantage :- If you are looking for instant RPM boost or top up then you need to go with this product. If you have a slight knocking sound it will fade away after you use this product. The engine and the throttle respose will go more lively.
Disadvantage :- It clocks the full RPM very quickly but you will not get the top speed gliding effect... It will clock max up to 125 - 130KMPH with Hard Pull. (With Copper plugs it can go up to 135 - 140 KMPH.) Verified from my end.