Welcome to the fun world of aftermarket modifications, be forewarned, it's a slippery slope 
That's the EGR assembly, an ancient device invented by the automotive industry to appease the emissions gods before the the advent of the catastrophic converter, you can get rid of it.
This one looks like the Positive Crankcase Ventilation. Crank the bike and put your finger close to the end. If it's blowing air, it's the PCV hose. Route it somewhere around the frame(pointing up) so that air flows across the end of it.
You won't need this one either, since your new carb already came with a drain hose.
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2017 Ice Bear Little Monster, work in progress
2007 Aprilia RSV1000R, unreliable piece of sh*t
2007 Moto Guzzi Breva V1100, epitome of reliability
2000 Moto Guzzi California V11, resting in pieces
The cage: 1998 BMW Z3, 1.9L w/full Dinan engine upgrades
Last edited by Skin Mechanic; 04-21-2017 at 07:06 AM.
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