MSefi.com read only forum (Jan.15,2018)

i have the throttle bodies below, need to know where i should get my MAP sensor reading from? there is no manifold in this case.


thanks!

Lance wrote:infinkc,

The small nipple on the fuel pressure regulator was likely designed to go to a manifold vacuum source, so I would hook your MAP sensor wherever that hose went to.

Lance.

yea i noticed that also, had to be getting a vac source from somewhere for the FPR, guess ill have to do more research. Does anyone know if i can just tap the inlet side of the TB for a vac source?

On the motorcycle that those came off of they probably had provision for a vacuum fitting to sync the butterflys. On some bikes they are on the manifold and some on the throttlebody. From the picture it looks like you need to tap the throttlebodies. then tee them together.

checked and found out that thei vac line for the FPR is left open (these TBs are from an arctic cat snowmobile) where is the best place to tap a hole for the map sensor? will i have problems using these TBs? im only going to be using one of these not the pair.

thanks!