NOS Dry System Jetting

[Ralli///Art GS]

The manual reccomends a .042 bypass jet when using a 70 shot (.036 jet), I want to run a little richer. My question is what size bypass jet do I install to achieve this. Do I go one size up or one size down?

 

[NosLaser]

On a dry kit, a numerically lower number is going to richen up the system on the 'fuel' side. Smaller orafice, the more it bumps up fuel pressure. The nitrous side remains the same, and for a wet kit it is opposite; the fuel jet will need to go larger (numerically higher) in order to richen it up.

Smart idea though. A lot of people, instead of playing with the fuel jets, will automatically go down a size on the nitrous jet. You will always make more power by tuning the 'fuel' side of it rather than going down on jet sizes for the nitrous side.

Regards,

 

[Ralli///Art GS]

Great response. thank you!