Carb synch sucess!!!

[baylensman]

So I did it. I bought a motion Pro 2 tuner. Setting it up and letting the bubbles out took a bit of fiddling but after reading the directions it was easy enough.

All the vacuum tuners mention "does most motorcycles purchase optional 6mm adapters for Yamaha and others" so I did. I don't know why they aren't needed.

It took longer to prep the bike and locate the screws than actually tuning did.

 

I turned the idle screw way up. and synced 1 to 2 then 3 to 4 then 1,2 to 3,4. I noticed an immediate effect the bike ran much smoother. I let it run for about 2 minutes then shut it down.

 

I let it cool a bit then restarted and the idle was way higher so I brought it down again and rescynched as they seemed a little off. When I was done the bike was very smooth but the idle continued to climb.

I adjusted the idle down to around choke high setting s (1200 to 1800) by ear. and synched for the third time. I then brought the idle down as low as I could with out stalling then up 1 half a turn on the screw. it is very smooth at idle now.

 

I grabbed my helmet and off I go to try it out. Man what a different bike!

 

The power comes on very smooth much lower than before and the LUG CHUG is gone when I slow down and reaccelerate with out down shifting. I did a low speed pull in third gear at 25 mph I twisted full throttle!! no CHUG or LUG just smooth accele that accelerated as the Revs climbed I chickened out at 85+ mph and hit 4th I think third would have kept going!!

 

all in all a big success so far I 'll check the mpg going forward and see if I'm in the 40 mpg territory that some of you have claimed.

 

A bit of advice. my bike is 10 years old and the rubber didn't want to let go!! I had to work a 90' seal pick all the way round the hose to get it to release. I actually pulled the one fitting out of the manifold with the hose trying to release it.

[Rafterd]

My tuner should be here Monday. Rebuilt all carbs and set the floats. It sounds good, but I know the carbs need to be synced. Hopefully Monday or Tuesday I'll get it done. Can't wait to check my gas mileage.

[BlueSky]

One trick I use for getting vacuum lines off is to twist it to break the seal.

[CaseyJ955]

Its amazing how much low rpm manners increase when all four holes are doing the exact same thing! Glad you had success. Dont burry that gauge to deep, its good to throw it on the bike at least once a season to keep it crisp and happy.

[baylensman]

Its amazing how much low rpm manners increase when all four holes are doing the exact same thing! Glad you had success. Dont burry that gauge to deep, its good to throw it on the bike at least once a season to keep it crisp and happy.

no it will hang right next t the clamp on volt meter and my A/c gauges, I like to intimidate the neighbors when they walk into my shop!!!