Quote:
Originally Posted by Lethal6.2LE
Just a thought, but for a stock ZL1 could we just go into the infotainment system and set the exhaust to touring mode, or stealth and override the mode switch? Even if they go through the various setting with the mode selector switch the exhaust note shouldn't change correct?
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This is correct, but note that the car may not remember the stealth exhaust mode, at least mine defaults back to tour if I stop, then start it, no matter the exhaust mode override. If you can make sure the engine isn't ever killed during the tests once you set stealth mode, you'll be okay even if all drive modes are tested.
I am somewhat surprised, however, that a stock ZL1 would fail a warm start sound test, when cat warmup isn't even a factor. That on a cold start causes the biggest "bark" that is likely above 95 dB, warm starts in tour mode should be mild enough, but who knows, maybe the 2019+ tune isn't as stringent as the 2017-2018 one.