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RHD ZL1 · 12-13-2020, 01:41 AM

Hi All,

Proud owner of a 2019 ZL1 all the way from down under Australia.

Has anyone here have a definite answer if removing the factory rear muffler (to be replaced with aftermarket exh system) has any effect on the aero of our cars? Removing the suitcase style rear muffler leaves a large void under the back of the car that apparently then allows air to collect up against the rear bar and add drag rather than the air passing under the OEM rear muffler and preventing added drag from occurring. Has anyone any info on this?

Thanks.

12-13-2020, 01:41 AM	#1
RHD ZL1 Drives: Camaro ZL1 Join Date: Apr 2020 Location: Australia Posts: 43	Rear suitcase removal effect on aero Hi All, Proud owner of a 2019 ZL1 all the way from down under Australia. Has anyone here have a definite answer if removing the factory rear muffler (to be replaced with aftermarket exh system) has any effect on the aero of our cars? Removing the suitcase style rear muffler leaves a large void under the back of the car that apparently then allows air to collect up against the rear bar and add drag rather than the air passing under the OEM rear muffler and preventing added drag from occurring. Has anyone any info on this? Thanks.