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any experience with side muffler deletes?

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Old 05-22-2010, 03:31 PM
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tcsracing1
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Default any experience with side muffler deletes?

Anybody ever use the Fabspeed side muffler deletes on stock GT3 exhaust?

i have a set that i would like to try, however im curious of the DB level??


I have tried supercup exhaust (sans mufflers) and was fun but too loud for most tracks.

Im back to stock exhaust.

Im now considering using my fabspeed side muffler deletes with stock center muffler for low DB requirement tracks (if possible) and using my sharkwerks center with the side deletes for tracks with no requirements.

basically my goal is to only need to swap centers depending on tracks all the while having no side mufflers!
Old 05-22-2010, 03:48 PM
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Originally Posted by tcsracing1
Anybody ever use the Fabspeed side muffler deletes on stock GT3 exhaust?

i have a set that i would like to try, however im curious of the DB level??


I have tried supercup exhaust (sans mufflers) and was fun but too loud for most tracks.

Im back to stock exhaust.

Im now considering using my fabspeed side muffler deletes with stock center muffler for low DB requirement tracks (if possible) and using my sharkwerks center with the side deletes for tracks with no requirements.

basically my goal is to only need to swap centers depending on tracks all the while having no side mufflers!
I have a set of the deletes from my 997.1 GT3 but refrained from installing them because others said they were insufferably loud.
Old 05-22-2010, 05:55 PM
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On Pole
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I'll sell you mine. They are too load for me.
Old 05-22-2010, 06:06 PM
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tcsracing1
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well, it appears survey says they are extremely loud! so 90-92 DB is out of the question
Old 05-22-2010, 06:56 PM
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Scott997
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DONT DO IT! Unless you like getting a headache every time your drive.
Old 05-22-2010, 07:13 PM
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silverboy
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I had a Fabspeed exhaust on my GT3.1 and thought they were the sweetest sounding exhaust for a GT3. Funny but the car sounded more Italian than German - ha ha ha. It had high flow cats. Definitely not loud.
Old 05-22-2010, 07:53 PM
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Originally Posted by Scott997
DONT DO IT! Unless you like getting a headache every time your drive.
i used to drive with straight pipes and no mufflers and not much problem, only at high rpm. I only had stock headers and cats to act as a back pressure devise.

Last edited by tcsracing1; 05-22-2010 at 08:13 PM.
Old 05-22-2010, 08:05 PM
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Originally Posted by tcsracing1
i used to drive with straight pipes and no mufflers and not much problem, only at high rpm. I only stock headers and cats to act as a back pressure devise.
I agree that cats alone sound great on a 996 GT3, but on the 997, it gets to be pretty raucous.
Old 05-22-2010, 08:39 PM
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Scott997
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Originally Posted by tcsracing1
i used to drive with straight pipes and no mufflers and not much problem, only at high rpm. I only had stock headers and cats to act as a back pressure devise.
You're hardcore! I just heard the Akropovic setup at the track. It is unbelievable.

I went unplugged on my GT3 for about a week, but it got annoying with that drone between 2-3.5k.
Old 05-22-2010, 09:18 PM
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leif997
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Sharkey total bypass system plus EVOMsit is a symphony to my ears at all RPM's, but clearly not passing on many track sound level limits...

do they have limits on T & T days as well? What about racing days?....I stopped DE years ago secondary to the restrictive aspects.

I suggest you keep the RS as you like for the street and just go full blown CUP for real racing and be done with all the silly constraints.
Old 05-22-2010, 09:31 PM
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Originally Posted by leif997
Sharkey total bypass system plus EVOMsit is a symphony to my ears at all RPM's, but clearly not passing on many track sound level limits...

do they have limits on T & T days as well? What about racing days?....I stopped DE years ago secondary to the restrictive aspects.

I suggest you keep the RS as you like for the street and just go full blown CUP for real racing and be done with all the silly constraints.
CUPs' are restricted for DB regs too
Old 05-23-2010, 12:13 AM
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MJSpeed
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I don't have any mufflers with a full FVD set up.

In other words FVD Headers with 200 cell cats and then straight piped all the way out and it's loud as ****! I like it though.

Two things:

1) it's really loud

2) Based on FVD's research the engine needs more back pressure and therefore we installed an FVD center muffler (still much less restrictive than stock but more back pressure than straight piped).

There first video is straight piped the second has the FVD center muffler.



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Old 05-23-2010, 12:37 AM
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leif997
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Originally Posted by tcsracing1
CUPs' are restricted for DB regs too

Even on race days?.....
Old 05-23-2010, 12:42 AM
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leif997
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Originally Posted by MJSpeed
I don't have any mufflers with a full FVD set up.

In other words FVD Headers with 200 cell cats and then straight piped all the way out and it's loud as ****! I like it though.

Two things:

1) it's really loud

2) Based on FVD's research the engine needs more back pressure and therefore we installed an FVD center muffler (still much less restrictive than stock but more back pressure than straight piped).

There first video is straight piped the second has the FVD center muffler.
nice headers. Great sounds. What kind of data do you have for the two systems?

Did you have the ECU flashed as well?
Old 05-23-2010, 12:53 AM
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MJSpeed
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ECU was flashed...PM Rhonda from FVD for more data. All I have is this:

The first one is for the straight piped and second for the center muffler set up:

**These are from a someone else's RS with the exact same set ups**

THE SYSTEM IS DESIGNED AND BUILT BY M&M EXHAUST
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