[img]i/expressions/face-icon-small-disgusted.gif[/img] I own a yfz450 and i recently bought sparks w/ dyno-jet kit. i set the main jet 130 and the needle on the 6th groove. I'm still having problems with my bike. Does anybody know what I can do to make my bike run better. And what jets would I need and needle???

 

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can u tell me what jets r u using for the yfz450. and what groove did u put the needle and is it stock or dyno jet?

 

Eddie,
mate grab a yz needle, a handfull of main jets 165-175, 45 pilot, and flick the dyno stuff.


Geoff.

 

Geoff, agree totally

 

I just installed the LRD full exhaust system and Pro Flow kit w/K&N filter.
I was told by LRD to put the stock needle on the 7th clip from the top.
Run 58 pilot jet. 180 main jet and 2 turns out on the screw.
What does everyone think? Am I going to get it to run right first time out?

 

I hope you mean a 48 pilot, and you should get a yz needle.
Always give your elevation when aking about jetting.


Geoff.

 

Hey Jr.11
Are u using a curtis spark exhaust system? What size is your pilot jet in your main jet? What groove did you put your yz needle? I just trashed my dyno jet kit because I could not jet my 450. So if you can tell me a little bit more details on how your bike is running because my is running like sh_t with the dyno jet kit.

 

LRD sent me a 58 pilot jet. Way too big, eh? Elevation here 150 foot above sea level.
Think I should be running a 48 pilot? What about the main? 180 main is ok?