Once you have built your new motor, or fitted any tuning parts you will NEED to visit a good automotive Dynamometer or rolling road. If you don't you will never be able to set up your engine properly. A good dynamometer allows you to use a gas analyser while under load so you can see the real air fuel mixture at all RPM's while driving.
![Car chassis Dynamometer](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_uZEReRrcS1x1cislJO_ERGYSLg5dP7l6K9BuvMSHmnpysqmfcL5QhaWmsaWfCRWDs36DFSXpmu5faOb4VrYfWuzolK-84T0V1tm8IdgXs235mOrnci0AIuHQ=s0-d)
Rather than discuss the subject on this site it is better if you go to my Automotive Dynamometer pages, as I used to build them! (Below)
![Click to see a richer run as well as these two](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_uI6XpMesuKgDEGfdD4UCZurSg90Xx3SaEfRxtAbfJgr5KNvyeHVXbmz062Hh4IgRpgX3TtaApti4XahJaG-I9CHt88DHJRx-GNrh08N5V5EEzOeZxm30CS8LmLFn8U6eoR=s0-d)