Home › Forums › Tech Talk › What's Jet number that you guys use for California weather? › Reply To: What's Jet number that you guys use for California weather?
Start rich and jet down (one jet at a time) until it runs like you stole it.
Then make a note of the air density and then next time you go to the track do the same again – simple!
Don’t forget that the air density and therefore your jetting may well change during the day so keep monitoring your engines performance and jet up/down as appropriate.