GT350 Exhaust

2521 Views 2 Replies 3 Participants Last post by DCShelby, May 30, 2018

flatout

Discussion Starter · May 29, 2018

I have a 2017 GT350. It had 104 miles (currently at 1900) when I got it from a Porsche dealer (previous owner traded in to get a 911 or something).
I use it as my daily driver, It was sitting in my garage for 4 days as I was outta town and was expecting it to roar on cold startup but surprisingly was a very quiet start. I noticed that it doesn't sound like it used to, exhaust feels muffled in sport/regular mode and there's not much unusual activity to relate the root cause. I had a buddy of mine ride with me and he immediately noticed the change. Its pretty annoying to hear a low muffled exhaust when your ears were trained to hear the loud roar until few days ago. I don't know where to begin with especially coz I got the car from a non ford dealer, I guess I have to look around for a local ford dealer (with good service reviews) to help diagnose but meanwhile wanted to post here to get some insight. I would appreciate any help, thank you !

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extrachrispy

· #2 · May 30, 2018

If you start it as soon as you push the clutch to the floor, it will be raucously loud, then get quiet as the exhaust valves close. If you wait a few seconds for the exhaust valve self-test to complete, it will start up in "normal" mode, and be quieter.

Every time the car starts, with the exception of the cold-start trick mentioned above, it resets to normal mode. You have to set the exhaust to sport mode, or set the whole car to sport mode, anew each time.

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DCShelby

· #3 · May 30, 2018

I traded my 2009 911 C4S for my new 350.

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