try to avoid hi-to-lo stuff la if can. my experince with tht stuff not good at all. will produce hissing sound. unless u change to very very expensive hi-to-lo maybe will no thave this problem la
*WTS:Nissan Silvia 180SX-Type S (KRS13)-rare model*
SPEC LIST
-SR20DET
-Type S KRS13
-S14 Turbo
-Apexi Exhaust Manifold
-Apexi Tomei Cam
-Cusco Engine Bar
-Cusco Oil Tank
-Pivot Volt Stabilizer
-Sard Fuel...