"Break In" for Catback Exhaust???
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Driver School Candidate
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From: bc
"Break In" for Catback Exhaust???
I was told that catback I recently installed will "break in" and sound quieter and less ricey.
Will some miles on it really make much of a difference?
Will some miles on it really make much of a difference?
Lexus Test Driver
Joined: May 2011
Posts: 1,492
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From: PA
An exhaust doesn't break in "per say". I think what the person meant is when they told you that, is that over time as you get the exhaust hot, you will start to cook the insides of the muffler. As that happens, you will notice the exhaust will become louder. I would say about 1dB or 2 louder. Nothing, you as the owner will notice, but if you ever put a new muffler beside an used muffler, you will notice the used muffler is louder.
Drive the daylights out of it. The sooner you blow the packing out, the better lol
Drive the daylights out of it. The sooner you blow the packing out, the better lol
Thread Starter
Driver School Candidate
Joined: Nov 2014
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From: bc
Full cat back. The cold start sounds like a Maserati, That's why I am bit concern. But it quiet down after about 8 seconds. Maybe just I am not use to the new sound when I start the car every time.
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, I'm interested in hearing your thoughts and experience with the q300 as time progresses (cabin noise, low rev, high rev, idle, etc).
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Driver School Candidate
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From: bc
Idle : quiet ( not same quiet as stock, but you don't feel bothered at all)
High rev 3k-5k : nice throaty growl.
Low rev 1k-2.5k: making the most sound, but not reach the level that you will feel embarrassed. With ML volume at 22, you can hear just 10% of the sound inside.
Cabin noise: only noticeable between 1k - 2.5k.
Cold start : the sound will make you feel embarrassed. Sooo not Lexus lol. But good thing is will gone after few seconds.
Occasionally poping sound while decelerating. Like a cracker.
Last edited by hanhanvic; Nov 25, 2014 at 07:32 PM.
So far,2015 IS350 rwd . everything under Eco mode, audio off. Driving like grandma.
Idle : quiet ( not same quiet as stock, but you don't feel bothered at all)
High rev 3k-5k : nice throaty growl.
Low rev 1k-2.5k: making the most sound, but not reach the level that you will feel embarrassed. With ML volume at 22, you can hear just 10% of the sound inside.
Cabin noise: only noticeable between 1k - 2.5k.
Cold start : the sound will make you feel embarrassed. Sooo not Lexus lol. But good thing is will gone after few seconds.
Occasionally poping sound while decelerating. Like a cracker.
Idle : quiet ( not same quiet as stock, but you don't feel bothered at all)
High rev 3k-5k : nice throaty growl.
Low rev 1k-2.5k: making the most sound, but not reach the level that you will feel embarrassed. With ML volume at 22, you can hear just 10% of the sound inside.
Cabin noise: only noticeable between 1k - 2.5k.
Cold start : the sound will make you feel embarrassed. Sooo not Lexus lol. But good thing is will gone after few seconds.
Occasionally poping sound while decelerating. Like a cracker.
Thread Starter
Driver School Candidate
Joined: Nov 2014
Posts: 27
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From: bc
Lexus Test Driver
Joined: May 2011
Posts: 1,492
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From: PA
You wanna talk popping, I have 1 7/8" headers to 3" hi flow cats, to 3.5" exhaust to 3.5" mufflers, to 4" tips on my camaro. When I pop, it sounds like a gun shot. I have had people behind me hit the brakes because they thought something was happening.
Popping sound is the fuel cutoff when you let go of the gas. Its ok.
You wanna talk popping, I have 1 7/8" headers to 3" hi flow cats, to 3.5" exhaust to 3.5" mufflers, to 4" tips on my camaro. When I pop, it sounds like a gun shot. I have had people behind me hit the brakes because they thought something was happening.
You wanna talk popping, I have 1 7/8" headers to 3" hi flow cats, to 3.5" exhaust to 3.5" mufflers, to 4" tips on my camaro. When I pop, it sounds like a gun shot. I have had people behind me hit the brakes because they thought something was happening.
Lexus Test Driver
Joined: May 2011
Posts: 1,492
Likes: 12
From: PA
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Golden95SC
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Jul 18, 2011 12:50 AM