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500+ HP What Muffler
I'm doing some research "again" to see what are you guys running 500+ hp are using for mufflers? I've been updating my car in the interior dept and the muffler is next on the agenda.
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10.76@139-1/4 mile 0-1 mile 193MPH I Love to Shine Cars 
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08-12-2015, 06:04 PM
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Registered turbo addict
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Borla XR-1
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08-12-2015, 06:24 PM
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,126
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Juan, been itching to talk to you and sorry to hijack. When you did 139MPH in the 1/4, wasn't that with far less than 720WHP, correct? Just looked at your "Garage" profile, I thought you were around 650FWHP when you did 139?
35PSI of boost?! Wow! What head studs you running? E85 or race gas? Back to your question, I'd imagine you just need a straight-through muffler of your choice. Have heard as high as 1000whp but mostly 750whp being ok with 3". I'd think I'd go 3.5" though at your power levels.
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Cory - turbo'd '87 C3.2 Guards/Blk, 3.4, 7.5:1 CR P & C's, 993SS cams, Borg-Warner S366 turbo @ 1.2-1.5 bar, depending on mood , Treadstone full bay IC, 70mm TB, TiAL F46 WG, HKS 1 1/2" BOV, twin 044 pumps, MicroSquirt AMP'd w/GM smart coilpack, Bilstein coilovers, Tramont wheels (285's rr, 225's frt), Big Reds frt, 993 rr., tower brace, MOMO wheel
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08-12-2015, 06:37 PM
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Menmojo that's my current idea
 Tippy When you did 139MPH in the 1/4, wasn't that with far less than 720WHP, correct? If I recall correctly 615rwhp Just looked at your "Garage" profile, I thought you were around 650FWHP when you did 139? 35PSI of boost?! Wow! What head studs you running? E85 or race gas? APR head studs on C116 Fuel I'm happy with my current muffler but I don't like how it shows more than half from the back so I'm looking for a cleaner look, this one is 3" be cool to have a 6'' lol
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10.76@139-1/4 mile 0-1 mile 193MPH I Love to Shine Cars
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08-12-2015, 06:45 PM
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,126
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Quote:
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Cory - turbo'd '87 C3.2 Guards/Blk, 3.4, 7.5:1 CR P & C's, 993SS cams, Borg-Warner S366 turbo @ 1.2-1.5 bar, depending on mood , Treadstone full bay IC, 70mm TB, TiAL F46 WG, HKS 1 1/2" BOV, twin 044 pumps, MicroSquirt AMP'd w/GM smart coilpack, Bilstein coilovers, Tramont wheels (285's rr, 225's frt), Big Reds frt, 993 rr., tower brace, MOMO wheel
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08-12-2015, 07:29 PM
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,126
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Oh, and XR-1's sound insane! I remember hearing them on a V8 back in the early 90's. It was the best tone I had ever heard.
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Cory - turbo'd '87 C3.2 Guards/Blk, 3.4, 7.5:1 CR P & C's, 993SS cams, Borg-Warner S366 turbo @ 1.2-1.5 bar, depending on mood , Treadstone full bay IC, 70mm TB, TiAL F46 WG, HKS 1 1/2" BOV, twin 044 pumps, MicroSquirt AMP'd w/GM smart coilpack, Bilstein coilovers, Tramont wheels (285's rr, 225's frt), Big Reds frt, 993 rr., tower brace, MOMO wheel
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08-12-2015, 07:31 PM
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GJF is all talk, lol he won't race me lol
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10.76@139-1/4 mile 0-1 mile 193MPH I Love to Shine Cars
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08-12-2015, 07:34 PM
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,126
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Quote:
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Cory - turbo'd '87 C3.2 Guards/Blk, 3.4, 7.5:1 CR P & C's, 993SS cams, Borg-Warner S366 turbo @ 1.2-1.5 bar, depending on mood , Treadstone full bay IC, 70mm TB, TiAL F46 WG, HKS 1 1/2" BOV, twin 044 pumps, MicroSquirt AMP'd w/GM smart coilpack, Bilstein coilovers, Tramont wheels (285's rr, 225's frt), Big Reds frt, 993 rr., tower brace, MOMO wheel
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08-12-2015, 08:03 PM
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Bad LT
Join Date: Dec 2008
Location: Newcastle Australia
Posts: 630
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Exactly. What muffler..
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08-12-2015, 09:11 PM
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Crotchety Old Bastard
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How much over 500HP?
I don't know what the top end is for power levels that our 3" mufflers will support but they can and do handle 500HP engines. They can also handle more heat than any 304 system, weigh less and have many configuration options. If going over 600hp and using 3.5"+ you will quickly lose the ability to keep it quiet, if that matters.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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08-13-2015, 03:49 AM
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,126
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Quote:
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Cory - turbo'd '87 C3.2 Guards/Blk, 3.4, 7.5:1 CR P & C's, 993SS cams, Borg-Warner S366 turbo @ 1.2-1.5 bar, depending on mood , Treadstone full bay IC, 70mm TB, TiAL F46 WG, HKS 1 1/2" BOV, twin 044 pumps, MicroSquirt AMP'd w/GM smart coilpack, Bilstein coilovers, Tramont wheels (285's rr, 225's frt), Big Reds frt, 993 rr., tower brace, MOMO wheel
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08-13-2015, 05:50 AM
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Registered User
Join Date: Oct 2010
Location: Southern NH
Posts: 3,553
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Quote:
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08-13-2015, 06:01 AM
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Registered
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Somewhere I have the 720 dyno sheet but for now this one should work
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10.76@139-1/4 mile 0-1 mile 193MPH I Love to Shine Cars
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08-13-2015, 06:09 AM
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Mr. C
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I'm glad you started this thread Juan :-) This very topic has been on my mind. I have some old skool borlas :-)
I wanted to replicate this muffler or at least the tips ! 
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" Mr.C " Six = Sex Last edited by SAY - 642; 08-13-2015 at 07:57 AM.. |
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08-13-2015, 07:52 AM
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Registered
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 2,855
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Magnaflow, 3" straight through. More canister size = quieter.
Tom's UBER930 ran 3.5" and is shockingly quiet and civilized. It gets more engine noise in the cabin due to solid engine mounts than it gets exhaust noise. Borla XR-1 has a burlier but less smooth exhaust note IMO.
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Chris Carroll TurboKraft, Inc. Tel. 480.969.0911 email: info@turbokraft.com http://www.facebook.com/TurboKraft - http://www.instagram.com/TurboKraft |
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08-13-2015, 09:34 AM
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For the record my dream muffler is the "TurboKraft" that they no longer produce
 
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10.76@139-1/4 mile 0-1 mile 193MPH I Love to Shine Cars
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08-13-2015, 10:21 AM
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Registered
Join Date: Jul 2008
Location: PaloAlto Calif, IndianWells PalmDesert, Japan
Posts: 299
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The correct unit / muffler doesn't reflect your dyno figure.
Generally speaking firms / specialists have packages and products tailored to them. That said, some products to a degree can " work " interchangeably. Generally speaking, you should just consult with a few specialists. Discuss if they've a product that matches your present set up or if they can produce a tailor made unit for your specific application. Most who are pretty serious will have something developed and tailor made to their application needs. Good luck -
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Taze em..TAZE EM ALL!! A man that builds a thousend bridges is a bridge builder, but a man that sucks one ( blank ) is a ( blank ) sucker. It looks like the 4th of July from my rear view, how about from your view? |
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08-13-2015, 10:22 AM
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Registered
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 2,855
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Juan, you mean this one?
TurboKraft Inc : Sport Modular Muffler - $950.00 If so, it will be back. With the resurgence of "it needs to appear stock or close to stock" we are getting inquiries for this again.
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Chris Carroll TurboKraft, Inc. Tel. 480.969.0911 email: info@turbokraft.com http://www.facebook.com/TurboKraft - http://www.instagram.com/TurboKraft |
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08-13-2015, 11:02 AM
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,126
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Quote:
__________________
Cory - turbo'd '87 C3.2 Guards/Blk, 3.4, 7.5:1 CR P & C's, 993SS cams, Borg-Warner S366 turbo @ 1.2-1.5 bar, depending on mood , Treadstone full bay IC, 70mm TB, TiAL F46 WG, HKS 1 1/2" BOV, twin 044 pumps, MicroSquirt AMP'd w/GM smart coilpack, Bilstein coilovers, Tramont wheels (285's rr, 225's frt), Big Reds frt, 993 rr., tower brace, MOMO wheel
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08-13-2015, 12:58 PM
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,126
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Quote:
__________________
Cory - turbo'd '87 C3.2 Guards/Blk, 3.4, 7.5:1 CR P & C's, 993SS cams, Borg-Warner S366 turbo @ 1.2-1.5 bar, depending on mood , Treadstone full bay IC, 70mm TB, TiAL F46 WG, HKS 1 1/2" BOV, twin 044 pumps, MicroSquirt AMP'd w/GM smart coilpack, Bilstein coilovers, Tramont wheels (285's rr, 225's frt), Big Reds frt, 993 rr., tower brace, MOMO wheel
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08-13-2015, 01:00 PM
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1988 Porsche Carrera 3.2 Turbo
1988 930 Race Car/Sold
The 914
1989 Porsche 930
78 Porsche 911SC 3.0L, 3.3Turbo soon. 
RUF CTR Tribute Car * Sold *
