YFZ Central banner

1 - 5 of 5 Posts

·
Registered
Joined
·
26 Posts
Discussion Starter · #1 ·
Just got the Yoshi pro exhaust and wanted to know if anybody could help me with the proper jetting. I live in New Jersey at about 400-600ft elevation. Thanks
 

·
Registered
Joined
·
921 Posts
168main 45 piolt yzneedle fith clip 2.5 turns, plus if u havnt done it already do the cam mod, hope this helps u :rock :yfz :yfz :yfz :yfz :yfz
 

·
Registered
Joined
·
168 Posts
I have two YFZ's with Yoshis at that elevation and what worked perfectly for us is:

45 pilot

165 main

3rd clip on the YZ needle

2 turns air mix.

ERS BoxTops

Use med noise supressor on the pipe for much better low end with no ill effect on the top end.



Runs awsum, no choke needed to start at 37 deg F
 

·
Registered
Joined
·
264 Posts
I run a Yoshi TRS kit, it is the same just made from titanium. The jetting depends on alot, stock intake or aftermarket, lid on or off. Clip position on needle also. I ran a 45 pilot & 175 main stock needle on 5th with noss intake no lid and Yoshi exhaust and it hauled ASSSSSSSSS!!! Yz needle on 4th runs just as well top and bottom but a little better in the midrange, stock needle causes a little flat spot. Just my $.02
 
1 - 5 of 5 Posts
Top