what is the diff. between stage one and stage 2 jets?? is one better or is it a hight from sea leavle thing or what?

 

stage 1 is for stock or only lightly modded machines. It maximizes the fuel to the airflow that the engine rolled off the factory with, i.e. stock intake, stock bore/stroke, even stock exhaust.

stage 2 is basically larger jets and a more agressive fuel curve, for engines with port/polishing, High compression, larger bore/stroke, High-flow exhaust.


putting a stage 2 in a stock machien will make it run like crap (probably too rich) and putting a stage 1 in a highly-modded machine will make it run like crap (probably too lean)

Hope this helps

 

In my opinion calling jetting different "stages" is dumb, it's just a marketing gimmick by dynojet to make it sound like a performance mod. Jetting doesn't really go by stages, there's many sizes of main jets and pilot jets available, different sizes and settings of the needle, and different settings for the idle screw. Don't think of it as stages, but rather think of it on a linear scale. As you add more performance mods you will usually need to increase your jetting. With some mods like a head p&p you may actually have to make your jetting leaner because the porting allows the engine to run more efficiently and burn all the fuel in the chamber.

 

thanks guys !