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Idle Changed, Exhaust Sounds Different

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Old Jan 15, 2022 | 08:04 PM
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Default Idle Changed, Exhaust Sounds Different

Hi everyone. I recently got into the corvette club by purchasing a 09 Z06 with only 7400 miles and H/C/I already done. Everything has been great for a month but recently the idle has started to change and not sound as choppy/loud. I cleaned the MAF sensor with the proper cleaner and checked the vacuum lines and found no noticeable cracks or loose ends. It’s got NPP mufflers with mild to wild and I checked to make sure the valves weren’t closing up. What could be causing this issue? Thanks
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Old Jan 16, 2022 | 09:40 PM
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Have you connected a scan tool or checked for any current or historical codes?
Could be a wide range of things ranging from not important to engine component damage.
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Old Jan 16, 2022 | 09:52 PM
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Originally Posted by Dads2kconvertible
Have you connected a scan tool or checked for any current or historical codes?
Could be a wide range of things ranging from not important to engine component damage.
I have not. What scan tool would you recommend?
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Old Jan 17, 2022 | 01:08 PM
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Call your local parts stores to see which ones will hook up a code reader for you, or let you use one.
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Old Jan 17, 2022 | 08:04 PM
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I’ve noticed my car is quite a bit louder when the temps are cooler and humidity is down. When it’s hotter the idle isn’t quite as loud and the car doesn’t crackle and pop as much. Is it a drastic difference? What I am talking about is pretty subtle, most people probably wouldn’t even notice. I’m just paranoid lol.
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