wurlie

Ok, I buy the explanation of the difference btw how Akrapovic and stock center sections are constructed. Does anyone know how the Cup center section works? That, especially if found used, might be the most cost effective solution.
Serge - if you are reading this, could you share with us the rough cost to source the Cup rear muffler? Many many thanks!
Best, w

TRAKCAR

911slow posted diagrams I think.

CRex

Without getting bogged down with the internal workings of the Akra vs. Porsche systems, full-titanium setups are prone to cracking under track use. I've seen two myself--both Akra--cracking at the side of the center muffler within 5k track miles.

For a 10k+ exhaust I would expect something that LASTS...

Izzone

I'll let u know

2 year warranty and I track over 5k per year

Nizer

Did I miss them?

M3EvoBR

Sorry, Today was completely madness and tomorrow is looking the same way. Didn't even get home yet, and had 3 cars on the dyno all day Today for full standalone tunes. Still on car number 1.
Tomorrow morning is looking better for this kind of comparison.

lopro

is inconel a name for the pipe or a kind of metal? if its the kind of meterial then maybe thats why it can withstand the tempatures and the ti version of exhaust cannot????

some info I found ---> http://www.evlmotorsports.com.au/akr...ium-v-inconel/

About Inconel/Nickel Alloys

Inconel alloys are oxidation and corrosion resistant materials well suited for service in extreme environments. When heated, Inconel forms a thick, stable, passivating oxide layer protecting the surface from further attack. Inconel retains strength over a wide temperature range, attractive for high temperature applications where aluminum and steel would succumb to creep as a result of thermally-induced crystal vacancies. Inconel's high temperature strength is developed by solid solution strengthening or precipitation strengthening, depending on the alloy.

About Inconel/Nickel and Super Alloys

A superalloy, or high-performance alloy, is an alloy that exhibits excellent mechanical strength and creep resistance at high temperatures, good surface stability, and corrosion and oxidation resistance. Inconel is an example of a superalloy. A superalloy's base alloying element is usually nickel. Nickel-based superalloys have been developed for very high temperature applications where relatively high stresses are encountered and where high surface stability is frequently required.

Inconel & Inconel Alloys: Inconel 600, Inconel 601, Inconel 617, Inconel 625, Inconel 718, Inconel 722, Inconel 750, Inconel 800, Inconel 825

lopro

You beat me to it Larry, I was just about to post this one. Good idea from champion to bypass the side mufflers but retain the factory sport flaps

IZZONE is going for the 4.3 motor one piece at a time
thanks IZZONE for posting this research

I wish I was headed to winterfest, sounds like its going to be a hell of a time. You guys better make a bunch of thread documenting the whole weekend

this one here?
http://www.quicksilverexhausts.com/Porsche-911-(977)-GT3---Sports-Exhaust-'CAT-Back'-(2007-on)_PORSCHE_204_productbulletin.htm

I think this is what your looking for http://www.ebay.com.au/itm/Porsche-9...item336ec993a2

check this one out for rsr, wild https://rennlist.com/forums/997-gt2-...t3-gt3-rs.html

Oh no, seriously? Id love to have a pyrometer on it to get a temp reading at that price you would think the akra would be gold.

Your the test mule
I guess you will be putting this warranty to good use if this is the case

no, we are waiting still. Should be interesting

Dont worry,
Mondays are always rough. Have a

Izzone

http://www.supersprint.com/en/prod-2...093E280BA.aspx

Here is another system I considered

They make side pipes and plugs for the factory pipe.....for under 1k you get rid of side mufflers

http://www.supersprintna.com/product...arch_model/411

http://www.supersprintna.com/product...arch_model/411

lopro

I just found that when searching, Good eye IZZONE

https://rennlist.com/forums/997-gt2-...l-headers.html

these exhaust threads going on latley are great fun.

mdrums

Izzone...did you consider any of the FVD (M&M) exhausts? Just wondering what you hear about those?

I put FVD (M&M) on my car. Drone some from 2300-3200...but again it's not my DD car so....wifey says I'm still like a 21 year old....I said glad you think everything is still performing well...!

Here's what I put on for a cat back system and to delete the side mufflers on the GTS. This is the approved sysem minus the cat-less headers for the Rolex Grand Am Carrera's. It seems really well made, calims something like +13hp

lopro

IZZONE your just too quick for me bud

seems fab speed makes another one of those side pipe bypass arrangements that allows a person to keep the sport flaps and center muffler. I wonder how thes ones fair

Description:
Fits all 997 GT3/GT3RS Vehicles 2007+
Replaces the heavy, restrictive, factory side mufflers.
By applying the side muffler bypass pipes, you save 36 lbs. from the rear of your car. Factory side mufflers = 42.4 lbs-Fabspeed bypass pipes=6.3 lbs. = 36 lbs. saved.
Side muffler bypass pipes are made from T304SS, C.N.C mandrel bent, computer numerical controlled U.S.A. mandrel bending equipment.
Simple bolt-on installation. Easy on & easy off.
Side muffler bypass pipes work with factory headers and factory rear resonator.
Fabspeed allows interchangeability between aftermarket and factory products with the use of V-Band clamps.
Exotic sound with an aggressive edge, makes your 997 GT3/GT3RS sound like a CUP car.
Complies with emissions and inspections.



http://products.vividracing.com/muff..._GT3_H3ig0.php
couple ideas here

RSRanger

Good thought sir but do not even bother.
As I read just about every system in the planet has been mentioned except M&M. I am repeating myself and that pisses me off.
I on this topic.

btw lopro, that Supersprint system has been out since 2008.

Cheers
Ranger (Sua Sponte)

mdrums

M&M makes mostly race exhaust...top quality stuff...just never here about it here. I was over at BGB Motorsports in Daytona having John do a alignment on my car. I saw the M&M exhausts on teh race cars....street cars for the Rolex series turned into race cars....M&M is race and tested but I never knew about it until recently.

lopro

so m&m is not FVD>? I think the FVD one was mentioned. Post a link of it for others who are new and learning

see post 75 and 76 of this thread i think there is some FVD in there. Lots of good exhaust science around thanks to izzone and trackcar, mdrms, rsranger, msevobr an well....everyone
Cant wait to see these dynos an hear how trackcars jpipe rig goes at winterfest. I may end up looking into a fvd setup who knows just yet

https://rennlist.com/forums/997-gt2-...weights-6.html