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Stage1 Sound Enhancement

 
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  #1 (permalink)  
Old 31 Mar 2019, 11:46 pm
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Default Stage1 Sound Enhancement

With the Stage1 PCM installed, the car is noticeably louder.

Does anyone know how that is accomplished?
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Old 01 Apr 2019, 01:37 am
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Default Re: Stage1 Sound Enhancement

Didnt notice any significant loudness when I got my S1 done.
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Old 01 Apr 2019, 09:42 am
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Default Re: Stage1 Sound Enhancement

Really? Well its noticeable to me!
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Old 01 Apr 2019, 10:21 am
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Default Re: Stage1 Sound Enhancement

Never notice that. With my first one, I was hoping for a little turbo whistle. But the little toy turbocharger on these cars seems to be fairly quiet. Adding a cold air intake gives more engine sound. But nothing from the PCM tune as far as I've seen.
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Old 01 Apr 2019, 10:23 am
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Default Re: Stage1 Sound Enhancement

I wonder if it's a combination of the S1 and the high flow air filter i have in it?
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Old 01 Apr 2019, 10:54 am
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Default Re: Stage1 Sound Enhancement

Quote:
Originally Posted by GotToGo View Post
I wonder if it's a combination of the S1 and the high flow air filter i have in it?
You didn't do the MP BOV, did you?
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Old 01 Apr 2019, 10:58 am
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Default Re: Stage1 Sound Enhancement

No I didn't.
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Old 01 Apr 2019, 06:40 pm
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Default Re: Stage1 Sound Enhancement

unscientific claim. get a sound meter, do some tests and put this matter to rest.
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Old 01 Apr 2019, 07:01 pm
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Default Re: Stage1 Sound Enhancement

There are several reason you may be experiencing louder exhaust noise.

The Turbo may be producing more and quicker boost pressure. You may be throttling harder. Depending on what when and where your ECU came from and what real changes were done, and your original ECU may not have all updates and the STAGE 1 may be introducing a richer mixer and advanced timing comparing your replaced ECU which can make exhaust sounds different then what you are use to?

Without looking at real data like AFR, timing,knock values etc., when you experience the louder noise it is going to be hard to support the STAGE 1 by itself and the programming makes enough difference over a stock ECU to influence enough of a sound change to be normally noticed.

BUT.. its your ride and only you know it best. So if you say it is louder now IT IS!
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Old 01 Apr 2019, 08:40 pm
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Default Re: Stage1 Sound Enhancement

Quote:
Originally Posted by NitroPT View Post
There are several reason you may be experiencing louder exhaust noise.

The Turbo may be producing more and quicker boost pressure. You may be throttling harder. Depending on what when and where your ECU came from and what real changes were done, and your original ECU may not have all updates and the STAGE 1 may be introducing a richer mixer and advanced timing comparing your replaced ECU which can make exhaust sounds different then what you are use to?

Without looking at real data like AFR, timing,knock values etc., when you experience the louder noise it is going to be hard to support the STAGE 1 by itself and the programming makes enough difference over a stock ECU to influence enough of a sound change to be normally noticed.

BUT.. its your ride and only you know it best. So if you say it is louder now IT IS!
That kind of goes to my original question on what causes it. I'll do some comparisons.

Stand by.
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