Quick question about boost sensor

[MaxRyan]

Hi i just pulled my carbs so i could clean them and remove the front two coils for my cops and i noticed there is a little module called the boost sensor by the icu. There is a hose from this unit and i dont know where it plugs in, can anyone let me know thanks.

 

[Birdoprey]

It runs to the intake manifold(below the carbs) on Cyl #2(left front cyl while sitting on the bike)

 

[MaxRyan]

Thanks for the info, I think I must be blind though I can not see a nipple anywhere on that manifold. Is it on the part of the manifold that has the vboost butterflys?

 

[Birdoprey]

Its on the alum manifold thats bolted to the left front cyl head. You may need to remove the chrome plastic cover that covers the manifolds/v-boost setup.

 

[MaxRyan]

I have all that off because I have the carbs out right now, do you know if there is a picture of it in the servce manual perhaps

 

[Birdoprey]

Maybe this pic will help? Every one of my manifolds has a hose nipple(for syncing carbs) and are normally capped off except for the left front cyl(#2). It has a hose that goes to the Map sensor. You can see the hose on the left manifold closest to ya in the pic.

 

[MaxRyan]

That's awesome thanks, mine had a cap on that one as well. I assume when I go to sync them that I need to undo that hose again.

 

[Birdoprey]

Yessir, you'll remove it for sync only. If that hose has been off the map sensor(boost sensor), then you will notice a much snappier throttle with it connected. The V-max uses that to determine load and advances the timming at partial throttle.

 

[MaxRyan]

Sweet i did notice some throttle lag, i figured it was to do with the carbs though. Cant wait to get it all back together now !