denso

A few weeks ago, I swapped my spark plugs (regular Denso variant) to the Iridiums. Changed all the coils as well. Since that has been done my mpg has increased by quite a margin. I expected it to be slightly better but this goes way beyond that. I used to get 160 miles out of half a tank...

Not really sure how to access a spark plug so how does this IK22 look? I bought a set of Denso Iridium IK22 plugs around 18months back and ran them in my car for around 2-3 months. Read up a little then decided to go back to stock plugs. Anyway, after a little more reading it seems...