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My Own Exhaust Conclusion

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Old 04-21-2015, 03:58 PM
  #16  
Jimmy-D
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[QUOTE=MJSpeed;12222312][QUOTE=vf430;12222187]I think you guys are overthinking this exhaust thing. I dont know what kind of sound goals you are trying to reach . Let me say this your 991Gt3 will not sound as good as a V8 , Ferrari one specifically. forget the Scud , even my 430 sounded much better than my shark 997.2 gt3.

I completely disagree as, IMO the 430 and for 458 sound like **** compared to my GT3RS but then again exhaust sound preferences are subjective.


Around the 1:12 time.
Now that freakin sounds awesome - no doubt. This might be the ticket
Old 04-21-2015, 04:22 PM
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Having heard this and many other cars in person, this sound is up there with the best of them. I was giggling like a kid..

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Last edited by John@Fabspeed; 04-21-2015 at 05:43 PM.
Old 04-21-2015, 05:43 PM
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Has anyone fitted the factory 2010 GT3 CUP muffler yet? I'm not 100% in tune with the 991, so you'd have to verify on your own if the 997 J pipes work with the 991 headers. The internal construction of this muffler is slightly different than the OEM 997 GT3 muffler, so this solution is more appropriate than just deleting the side mufflers with J pipes.

Euro is cheap right now - you can get this full exhaust for the price of aftermarket J pipes.



Old 04-21-2015, 06:21 PM
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C63toGT3 Guy
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Originally Posted by gmgracing

Muffler system ( saves 50% of weight over stock )

Wow, sexy! Not on your website, though... Got prices and actual weight?
Old 04-21-2015, 06:57 PM
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MJSpeed
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Originally Posted by Jimmy-D
Now that freakin sounds awesome - no doubt. This might be the ticket
PM or call me.
Old 04-21-2015, 08:07 PM
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Watching exhaust videos shouldn't be the only thing you go on when making a decision. It's always best to try and meet up with local Rennlisters or hear different systems at the track. There are too many variables in the videos, what type of mic was used, where was it placed, did they edit the sound in post to make in punchier, EQ, and so on. There is no consistency or standard for recording the exhaust sounds. Are cars are impressive! Even an iPhone mic will get you pumped up if you aren't use to hearing them outside of the car. You have to also do your homework on the vendors and their "track records."
Also, a flat six is a flat six. An Italian Pipe will not make your car sound like an Italian Car.

The wail of any flat six is a battle cry so near and dear to me.

Long story short meet up with other owners and forget the cheesy videos with SFX.
Old 04-21-2015, 08:49 PM
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TRAKCAR
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^^^Sound smart advice!!

We spent a day at the Dyno with a bunch of GT3's and were swapping mufflers all day to listen and see power gain / loss..

It was a good day.
Old 04-21-2015, 09:15 PM
  #23  
RossL
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Originally Posted by MJSpeed
I completely disagree as, IMO the 430 and for 458 sound like **** compared to my GT3RS but then again exhaust sound preferences are subjective.
Preferences are definitely subjective. Your RS sounds good but the 430 and 458 definitely do not sound like ****.
Old 04-21-2015, 09:34 PM
  #24  
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Originally Posted by gmgracing
Great topic guys.. Here is a quick video of our system on a 991 GT3 we recently did for a client. Video Link: https://youtu.be/M3JfO0ShRnc Center section without thermal coat IMG_2367 by GMG Racing, on Flickr Center Section with Thernal Coat IMG_2418 by GMG Racing, on Flickr Muffler system ( saves 50% of weight over stock ) _MG_9827_GMG by GMG Racing, on Flickr WC Sport Center Section: IMG_5354_GMG by GMG Racing, on Flickr RSR IMG_8518_GMG by GMG Racing, on Flickr
Please share pricing and weight. Thank you.

The sound is very good.
Old 04-21-2015, 10:11 PM
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MJSpeed
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Originally Posted by RossL
Preferences are definitely subjective. Your RS sounds good but the 430 and 458 definitely do not sound like ****.
Yep subjective and like I said IMO (in my opinion).

Italian Symphony


Again IMO I'll take ze German!


Anyone interested in having their GT sound awesome, PM me.
Old 04-21-2015, 10:45 PM
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vf430
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MJ , you are lucky to love your gt3 sound over Ferrari v8. Right there you saved a bunch of cash. More than likely "Ferrari sounds like **** " is not a majority viewpoint but you are entitled to your opinion. Cheers !
Old 04-22-2015, 12:48 AM
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MJSpeed
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Originally Posted by vf430
MJ , you are lucky to love your gt3 sound over Ferrari v8. Right there you saved a bunch of cash. More than likely "Ferrari sounds like **** " is not a majority viewpoint but you are entitled to your opinion. Cheers !
Thanks! However, I never said "Ferrari sounds like ****". I said that the "430 and 458 sound like ****". I LOVE the sound of the 360 Challenge Stradale, 430 Scuderia, F50, 250 GT California, 375 GTB, 275 GTB/4, 333SP, Enzo, Testarossa, F640-643, F40, F92a, F2002, F412TB1, need I go on?

Compare the 458 to any of those Ferraris I mentioned and I'm sure you'll agree that it's the worse sounding. The video that I posted of the 991 Cup GTD at Daytona blows the 458 and the 430 out of the water, again IMO. So let's agree to disagree.
Old 04-22-2015, 05:30 AM
  #28  
aznkuja328
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Originally Posted by C63toGT3 Guy
Wow, sexy! Not on your website, though... Got prices and actual weight?
I wonder what's the weight too! stock mufflers are about 44 lbs, with your quote being 50% less weight - are they only 22 lbs?

Impressive weight reduction!

the cargraphic complete side bypass are weighting about 5.4 lbs with valves and no muffler, and bbi is 4 lbs without valves and mufflers. On the other hand, cargraphic sport mufflers with the valves are about 27.5 lbs. these gmg sport mufflers seem to weight 5.5 lbs less than a similar system in the market!
Old 04-22-2015, 06:29 AM
  #29  
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Originally Posted by Mike in CA
There were 3 GT3's at our region autocross this last weekend. I had several people ask if we had all done some kind of exhaust mod as our cars were just about the loudest ones there. In fact, all 3 are stock.
And I was one of those people who asked when you and I worked the station
Indeed, to my ear it sounded aftermarket, especially under full gas in 2nd gear.
Alex



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