The upper line goes to the throttle body.
This lower S-shaped one goes to that Valve which i don´t know what it does and then to the EVAP canister. When i started the recent mods on my LT1 i found that "S" hose totally porous. I´ll replace it with a fuel resistant hose. Should be fine.
This lower S-shaped one goes to that Valve which i don´t know what it does and then to the EVAP canister. When i started the recent mods on my LT1 i found that "S" hose totally porous. I´ll replace it with a fuel resistant hose. Should be fine.
