Spark Plug Heat Range - NGK Spark Plugs - Tech Video
Explanation of a Spark Plugs Heat Range from NGK Spark Plugs USA
SPARK PLUG READING
www.facebook.com Reading For Air Fuel Mixture The porcelain around the plugs center electrode can be divided into three areas for reading. The ...
Limit Pushing - Pulstar Spark Plug Test
Well...as far as power goes...they work...... More tests will have to be done on gas mileage but they do increase power at least on my Celica GT ...