ZZP Stainless HHR SS Catback Exhaust Muffler Option:Muffler Delete 000 psi and are able

000 psi and are able to easily handle the tremendous acceleration shock loads(shear) and lateral forces (elongation) found in racing

dirty or painted PCM core returns will be docked or not accepted

you can divert some of the fuel from the DI fuel system and spray it directly into the intake manifold

plus 75% meth or e85

ZZP Stainless HHR SS Catback Exhaust Muffler Option:Muffler Delete 000 psi and are ableStainless steel Mandrel bent ZZP resonator (Optional) ZZP chambered muffler or muffler delete pipe Hangers in all OEM locations Includes all required clamps and gasket Direct bolt in when used with our 3" exit downpipe This exhaust only fits the "SS" rear bumper cover.