Even JB4 can hide the emission codes but you won't pass the emission test if you have a catless down pipe since you have to revert it back to map 0 for the emission test, and emission codes will pop up shortly. So, you will need a down pipe fix like this one.
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7/08 135 Coupe, Crimson Red, 6 SP, Sport, Taupe Lette/Aluminum. Performance Mods: JB4 on Map 5, BMS DP Fix V3, Injen polished intake, AR Catless DP, Maddad resonated mid-pipes, aFe exhaust polished tips, ST Suspension Coil Over and Hotchkis front sway bar. Others: BMS OCC, BT Scanner, Mud Flap. Next Mods: AA Front Strut Brace.
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