Gents.

Im after diagram of the engine in my WR125r. Theres a couple of parts i want to find out about.

1st is a little black "valve" type with a airpipe from the airbox through this "valve" into my exaust (just down from the manifold)

This is just a guess but does it blow Cold air into my exaust to lower emmissions? If so surely this will reduce back pressure obviously reduceing power.

Also can anyone reccoment me a full pipe for my bike?

Many thanks Paddy

Gents.

Im after diagram of the engine in my WR125r. Theres a couple of parts i want to find out about.

1st is a little black "valve" type with a airpipe from the airbox through this "valve" into my exaust (just down from the manifold)

This is just a guess but does it blow Cold air into my exaust to lower emmissions? If so surely this will reduce back pressure obviously reduceing power.

Also can anyone reccoment me a full pipe for my bike?

Many thanks Paddy

Anyone help?