Hi,
Could anyone help with a project Iv just purchased it a SP version of this bike but its has come in boxes, Im having trouble with the loom. There is a sensor on the top of the air box that has two pipes coming from it and Im not sure where the pipes should go.


Please see attached photo


What are all these pipes joined to?
A(purple) top of airbox?
B(yellow) ??
C(Lime green)??
D(Red)??



What is the part circled in red?

H

Post up a photo if you get a chance buddy & I might be able to help? I've just sold my SP version GSXR250 and they're very similar to the big brother 400.

air pressure sensor. I need one as well

The two pipes should run to a white nylon junction that then splits into 4 pipes that attach to the side of the float bowls.
The valve on the airbox is opened and closed in relation to TPS and revs and pressurizes the float bowls.

I concur. I had to buy a brass joiner to connect the hoses to the 4 carbs as mine was missing.

Variablevalves suck wrote:The two pipes should run to a white nylon junction that then splits into 4 pipes that attach to the side of the float bowls.
The valve on the airbox is opened and closed in relation to TPS and revs and pressurizes the float bowls.

Could you please take a look at the photo Iv attached to the post and help me sort out the pipe problem.

Gimly56 wrote:I concur. I had to buy a brass joiner to connect the hoses to the 4 carbs as mine was missing.

Could you please take a look at the photo Iv attached to the post and help me sort out the pipe problem.

P

You can connect some hoses to 'A' and simply have them hanging down into space. I did that on mine and it ran fine. They're only breathers and you can possibly get away with not even connecting any hose to them?