2008 GV250 fuel and vacuum lines help

Does your state require you to have emissions controller on the bike , as that is what they are essentially  (fake emissions spoofing but sucking fresh air from the airbox in to the exhaust pipes via the engine heads.)

Here in UK, we delete all that junk as it doesn’t benefit the bike whatsoever , we even have a few rare efi bikes that didn’t even have that from factory and some pre-2005 models.

If it is a requirement , let us know

yes sir , delete it all off the bike.

Usually for the “engine side” , we sell these blanks below:

EGR Valve Blanking Plate / AiS Delete Block Off Kit – Various Hyosung Carb Models

Then STEP 2 ===
Go to the airbox –> Make sure the airbox does NOT have open ports , block them. Those ports are what feeds those external emissions canisters on your bike.

Step 3 ===
See the “clutch arm” behind the rear engine ? –> There is a thick  10-15mm port , feed a hose there and make sure it goes to the airbox open port of the same diameter

This step 3 pipe is either overflow to airbox (which is what EFI bikes do anyway later on)  or you can overflow it to the road  (and block the airbox port) like below diagram

If you don’t have Hose #13  , you will find it most Hyosung Engines at your local dealer in your state or ask any major breaker in usa that has a Hyosung and quote the part number 13870H29B00  it is called “Crank Case Breather Pipe” and it has a “SLIT” at the bottom to stop road debris being sucked in to the crank! (very important)