How PGM-FI Electronic Fuel Injection works

As many people already know, an engine is a system which transforms chemical energy into mechanical energy: an engine receives the energy from one or more types of fuel (for example, gasoline, in most motorcycles); this energy is transformed into mechanical energy (mechanical work at the engine shaft) and heat by mean of combustion. In … Continue reading "How PGM-FI Electronic Fuel Injection works"

Installing Athena 166cc bore up kit on a Honda CBR125R

In November 2015, I decided to change the original piston and cylinder of my Honda CBR125R. There are some bore up kits on the market, at least two: one sold by Malossi, and one sold by Athena. Unfortunately, in Japan, the Malossi bore up kit is not available, so I chose the one sold by … Continue reading "Installing Athena 166cc bore up kit on a Honda CBR125R"

Install a new battery on Honda CBR125R

Yesterday, I finally installed a new 12V battery on my Honda CBR125R. The reason why I did it is that the engine did not turn on anymore when I pressed the starter button. I also noticed in the past weeks that the engine did not start very quickly. Sometimes, after pressing the starter button, it … Continue reading "Install a new battery on Honda CBR125R"

Akrapovic carbon racing exhaust sound check

Yesterday I took some videos to show how the sound will change after mounting an Akrapovic carbon racing exhaust on your Honda CBR125R motorcycle. First of all, let me list up the mods that I did on my bike: Akrapovic carbon racing exhaust system Modified air filters (Daytona 45mm + Kijima 12mm) Athena bore-up kit … Continue reading "Akrapovic carbon racing exhaust sound check"

How to put a conical air filter on a Honda CBR125R

In this post I am going to show you how to install a universal conical air filter on your Honda CBR 125 R motorcycle. First of all, let's talk about what will change in case you will install a different air filter. Performance: whether the performances will increase or decrease depends on how you will … Continue reading "How to put a conical air filter on a Honda CBR125R"