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991.2 911 4gts

Old 01-10-2019, 02:52 PM
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Piers Place
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Hi, my dads recently got a new 991.2 4gts and weíve found that the exhaust crackles in sport mode with sport exhausts arenít as loud As the one we test drove. Is this because the car needs to be run in more as itís only one 200 miles or...?
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Old 01-10-2019, 09:28 PM
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Bob Z.
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It will get a little louder over time but not that much so just add a pair of high-flow cats, such as the Soul Performance ones I put on, and you both will be very satisfied.
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Old 01-10-2019, 10:57 PM
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DBH
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Originally Posted by Piers Place View Post
Hi, my dads recently got a new 991.2 4gts and weíve found that the exhaust crackles in sport mode with sport exhausts arenít as loud As the one we test drove. Is this because the car needs to be run in more as itís only one 200 miles or...?
By the time you've broken in the car (~4k miles) you'll definitely notice a difference. Also, if you drive more aggressively, you'll hear a difference.
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Old 01-10-2019, 11:05 PM
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Bob Z.
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Don't wait that long, 2k miles is more than enough and if you have doubts consult the owner's manual.

And for your reading pleasure: https://www.momentumporsche.com/brea...ew-porsche.htm

Last edited by Bob Z.; 01-10-2019 at 11:42 PM.
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Old 01-10-2019, 11:35 PM
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Originally Posted by Bob Z. View Post
It will get a little louder over time but not that much so just add a pair of high-flow cats, such as the Soul Performance ones I put on, and you both will be very satisfied.
Exactly. I have the 991.2 C4 GTS with Soul cats. Perfect setup.
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Old 01-11-2019, 02:11 PM
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Originally Posted by DBH View Post
By the time you've broken in the car (~4k miles) you'll definitely notice a difference. Also, if you drive more aggressively, you'll hear a difference.
My bad. Break-in miles = 2,000, don't exceed 4,000 RPM.
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