Anyone know the stock jet sizes and carb size on the Z400?
Thanks

 

i'm not sure but i would imagine the jetting would be different for dif. elevations. in ohio my main was a 130 and pilot was a 22.5
later sparx

 

The Yoshimura web site says it is a 125, I am going to pull mine and check it this weekend if I have time.

 

i live in Alabama and i had a 130 main and a 22.5 pilot.

 

How do you like the Supertrapp IDS2 on the Warrior??? My wifes warrior is stock but I need to get her a set of paddles, but if I do that I will need to add a pipe for the power that paddles rob. The Supertrapp IDS2 is only $189 from Rocky Mountain ATV, and based on that I was thinking or ordering it. Did it really help with the power? With the 152.5 main jet do you run the airbox lid on or off? What altitude do you ride at?

 

WIThumper
I really like the Supertrapp on the Warrior. I actually bought it from Rocky Mountain ATV, I believe they had the best price. Rocky Mountain sells the Quiet Series which is not too loud (quite a bit more than stock though) and the power increse is noticeable when used with a quality air filter and correct jetting.
I am using the 152.5 main with the air/fuel screw out 2-3/4 turns. I cut square holes in the air box lid following the "web" pattern on the underside of the lid. This way, the air filter is held solidily in place but allows plenty of air flow.
I ride at altitudes around 5,000-6,000 and with the 152.5 I am running just slightly on the rich side.
Hope this info helps.