Throttle body sync at 600 mile service...

[pronomian]

Don't waist your money, it isn't needed, unless your dealer is so screwed up the screwed them up or they come that way from japan, which I doubt. I went to a dealer (a mech I trusted). The service rep said not to come back until 1500 miles and that the throttle bodies wouldn't need to be synch'ed, I always have a service on my bikes done at 600 miles (usually a second service). So as one who believes the internet, I was damn well determined to get them synch'ed at 600 miles. The tech (not the service rep) asked me if I heard they were off and I said yes, that is what I have been getting from those (who I thought were in the know) on the internet. Well, the throttle bodies were almost right on, didn't need to be adjusted though he did teak one to make it more perfect, must have been all of a millimeter turn, cost me one hour labor.

Mike

 

[Rickster]

Hey -- glad they were spot on, several have reported that.

The manual lists the TBS for the 600 service, so should be included.

This may be very much like shim-under-bucket valves. For a long time, the stealers checked them at the 600 mile service, but now most manufacturers have moved it to the 16K mark for checking valves. I guess they've collected enough valve data from the 600 milers to remove the valve check. One day, when there's enough data supporting spot on TBS -- that would get removed also.

Good to have them checked anyway -- now you don't have to worry if they were off from the factory!

 

[c2insa]

It's worth it. You can't tell they're off without checking them. Mine were off a little bit but the vibration reduction paid it off immediately.

 

[Claymore]

It's worth it. You can't tell they're off without checking them. Mine were off a little bit but the vibration reduction paid it off immediately.

+1 - mine were a little off at 600mi - probably within tolerance - it was nice to zero them in. I just did my third and start to finish was less than 30 minutes... The Carbtune paid for itself on the first go...

 

[C&C]

If you do them yourself, it is just too easy not to do them often and fine tune your ride. If you're paying someone else to do the service then maybe you might want to be a little bit more reserved, but as stated above, it is a 600 mile service item to be checked.

 

[onlyblue]

It's worth it. You can't tell they're off without checking them. Mine were off a little bit but the vibration reduction paid it off immediately.

+1 - mine were a little off at 600mi - probably within tolerance - it was nice to zero them in. I just did my third and start to finish was less than 30 minutes... The Carbtune paid for itself on the first go...

I see that the Carbtune appears to be only available directly from UK and current price appox 62 lbs.

Did you buy from UK or from a stateside vendor? It looks like the retail would be somewhat over $100.

 

[pawtracks]

I see that the Carbtune appears to be only available directly from UK and current price appox 62 lbs.Did you buy from UK or from a stateside vendor? It looks like the retail would be somewhat over $100.

I bought the combo (Carbtune + the storage zipper case)

$119 US after the conversion, 8 days UK to California

Carbtune

USA Page

Tool Pouch

~$6 cheaper if you get the toolpouch with the Carbtune unit "Combo"

:yahoo:

 

[PTP]

Don't waist your money, it isn't needed, unless your dealer is so screwed up the screwed them up or they come that way from japan, which I doubt. I went to a dealer (a mech I trusted). The service rep said not to come back until 1500 miles and that the throttle bodies wouldn't need to be synch'ed, I always have a service on my bikes done at 600 miles (usually a second service). So as one who believes the internet, I was damn well determined to get them synch'ed at 600 miles. The tech (not the service rep) asked me if I heard they were off and I said yes, that is what I have been getting from those (who I thought were in the know) on the internet. Well, the throttle bodies were almost right on, didn't need to be adjusted though he did teak one to make it more perfect, must have been all of a millimeter turn, cost me one hour labor.
Mike

I'd agree with don't waste your money...it's actually pretty easy to do, or learn to do.

I'd disagree with that it isn't needed, how would you know unless you check? I just did my 600 mile service last weekend, and the delta from the High to the Low TB was 30mm Hg. If I remember correctly, spec is 10mm.

I was honestly worried that the bike was so buzzy in the handle bars it would be an issue for the real long haul. The vibration is all but gone since I sync'ed the TBs.

As far as only turning one TB one millimeter on your bike, it doesn't take much to make a big difference on the scale...I don't doubt that he only had to turn the screw a little bit. This isn't like turning mix screws on a carb. I don't think I've ever, or ever heard of, turning a sync screw on carbs or TBs even a quarter turn...maybe a quarter turn cumulative across the bank.

In reality if you only got charged one hour of labor for the entire and complete 600 mile service, you got by pretty cheap...or the mechanic works damn fast.

PTP

 

[Bounce]

If you do them yourself, it is just too easy not to do them often and fine tune your ride. If you're paying someone else to do the service then maybe you might want to be a little bit more reserved, but as stated above, it is a 600 mile service item to be checked.

+1

There's a difference between being "within spec" and "tweaked to the best they can be which only you, as the owner, will be interested in doing". The latter is the way to get the il4 to be as smooth as possible.

 

[HondaCBX6]

Mine were off at the first check and by quite a bit. And like others have said, how would you know without checking? The second time at ~6,000 they were off again but only by a bit. The last 2 times I checked they were really pretty close. The last go round I descided to try to alieviate the buzz at 4,200RPM. I made the adjustment at the higher RPM but it did not make any difference from my perspective. I set it back. The nice thing about having a set of sticks is that is darned easy to do. I wouldn't trust a dealer to change a tire for gash sakes. the last time I did they forgot to tighten the pinch bolt and it is now MISSING! WTF? How does anyone ever take their bikes to a dealer? I would spend more time checking their work than just doing it myself.

But then as a side note... The last time I helped a guy do some work we forgot to tighten a couple of bolts (not good). I attributed it to the fact that I ASSumed he tightened them and he ASSumed I did. Don't ASSume anything. Check it twice!

John

 

[radman]

But then as a side note... The last time I helped a guy do some work we forgot to tighten a couple of bolts (not good). I attributed it to the fact that I ASSumed he tightened them and he ASSumed I did. Don't ASSume anything. Check it twice!
John

Would that have been Machman and his pinch bolts? Quite the surprise for him and John upon arrival at WooFoo. :blink: Coulda happened to anyone, but man oh man, that was almost a nasty.

 

[Blue Thunder]

Don't waist your money, it isn't needed, unless your dealer is so screwed up the screwed them up or they come that way from japan, which I doubt. I went to a dealer (a mech I trusted). The service rep said not to come back until 1500 miles and that the throttle bodies wouldn't need to be synch'ed, I always have a service on my bikes done at 600 miles (usually a second service). So as one who believes the internet, I was damn well determined to get them synch'ed at 600 miles. The tech (not the service rep) asked me if I heard they were off and I said yes, that is what I have been getting from those (who I thought were in the know) on the internet. Well, the throttle bodies were almost right on, didn't need to be adjusted though he did teak one to make it more perfect, must have been all of a millimeter turn, cost me one hour labor.
Mike

Mike,

I performed my own TBS service after reading about it on FJRtech.com and many posts here. It's pretty easy to do once you figure out the best way to get the gas tank and foil wrap out of your way. I had the exact same experience. The throttle bodies were very close. I changed one just a tad, but it really was not necessary. I have the gauge/tool and the knowledge to do this going forward. As the miles pile on, I'm sure this service will become more important.