[cinigen9]

I have heard a few people say this is a great upgrade used in conjuction with a slip on and filter - anyone tried it yet?

seems odd since the fcr is such a big improvement on the EX.

cinigen9

 

[ZRider400]

stock 400ex carb is like 35.5 mm Z carb is 36mm.....im guessing the EX carb wouldnt be as good since its smaller...but who knows.

 

[z400scraper]

i tried it after i stripped and broke my stock carb,so i bolted my 400ex one up with the dyno kit for the 400ex,,,,didnt notice anything other then low-end.