450r carb

[MAD450r]

was wondering if anyone has put a 450r carb on a 4**ex yet. IF so how hard was it to setup.

I just got my motor done up and now I cant seem to get the jetting exact on. so I want to try another carb.


I did get the jetting a bit better but I still get some poppng from time to time when I backoff from full throttle to rapidly

[MAD450r]

I now have my 416ex jetted with 155 main 42 pilot 2.5 turns out on fuel air screw, if someone can help or give me info on how hard it is to setup the 450's card I can get one of then from a freind