RKAutowerks

We're introducing our 321SS Long Tube correct tuned length stepped headers and light weight center exit muffler combo for 996 GT3. The system is designed and built by Charles Dundon. Many of you who have 996 GT3's and 997 GT3's know of Charles and his header designs. They make power, sound great, are well made in the USA by Charles, and are guaranteed for life to the original purchaser against cracks, splits, corrosion etc. (repacks of the mufflers not included...)

The system is available in 2 configurations.

1. With Bypass Flaps
You retain your ability to open up the exhaust or quiet it down. It's still a bit louder than stock, but not annoyingly so.

2. No Bypass Flaps
Straight through, no flaps as loud as you like!

Dyno is from an untuned 996 GT3 3.6L.





The stock setup in the 996 is about 90lbs our system without flaps is 32lbs, and WITH flaps is 36lbs. This is complete header flanges to the exhaust tips including ALL hardware, clamps, straps etc. Big savings over stock, and if you want super light, contact us for a 20ga setup they're about 25lbs, but not part of the group buy...

This is PJS's system


The headers


The system is practically guaranteed to have no CEL, but without cats it is an "racetrack or offroad use only" product. By this we mean that the light is off ALMOST ALL OF THE TIME except in the right conditions it is possible for the ECU to throw a O2 sensor or Cat efficiency fault. If it does, then clear it and drive, and it may be months or years with no CEL again. All of Charles’ current exhaust customers will easily vouch for this and agree that the light is off 99% of the time.

We're looking to get 10 folks interested in the Group Buy at

With Flaps: $6500
Without Flaps: $5650

This is $1000.00 off the retail price, first come first served!

christallon

Beautiful exhaust! Do you have any pics of this mounted on a customer car by chance. A picture like the one you posted on the 991 GT3 forum of the blue car. Thanks!

RKAutowerks

We'll see if we can get one from our customer with a 996RS. We're also evaluating how to economically add the dual exit exhaust option for those that are looking for the benefit, without having to change their bumper.

Charles@dundonmotorsports

On the Dyno, The Green Line is the 996GT3 DUAL exhaust setup that I have made 7-8 of. This was my past group buy dual exit setup. The Blue line is a center exit setup with slightly shorter headers and center exit, and no x pipe or merge between the banks,

Just clarifying info between the runs on the dyno

The Dual exit setup I have materials to build about 4 of them at this point, Center exit would be basically the same as a 3.6 997.1 GT3



Single exit setup




Dual exit setup

4porsh

Jamie_GT3

https://rennlist.com/forums/996-gt2-...s-exhaust.html

mkk62

Best mod on my car and I have lots of mods. Every track day several people tell me how awesome car sounds as I pass them. Lol. Charles standup guy with great customer service. Won't go wrong. And no problem ordering far away. I'm in Florida with no regrets.

Mike

DRPM

PM sent

christallon

Thx for posting that pic man! Truly amazing sound. I currently run Cargraphic mufflers after stock headers into a Fabspeed and out through stock tips. Do you reckon there is more horsepower in this Dutton system? I realize the sound will be better! What about around town...can you modulate throttle to keep sound in the acceptable range?

BTW, is that your garage and lift 4Porsche? What a sweet setup!

RKAutowerks

The power comes mainly from the header design and the exhaust being less restrictive is more just keeping the power we made there. There is definitely more power in our system than the stock headers/ muffler upgrade.

RKAutowerks

Replied

Rovman

I will second that. THE best mod on my track 996 GT3 is the Charles Dundon exhaust. I paired my system with some FVD tuning and it is a strong beast that's for sure. As mentioned above almost every track day I get compliments on the sound and questions about the details. Can't go wrong with this system.

4porsh

Not my garage, it's the guy that is in the pic. The garage is larger than his house. The man cave even has a second story over the garage. It's trick for sure, he is a super car dude too.
I can cruise around town with low sound, but if you wack the throttle all hell breaks loose.

Joe
4porsh

Rovman

^^^^ LOL, "all hell breaks loose" . So true. Keep it below 4k RPM and it's street acceptable.

Charles@dundonmotorsports

I just realized this but I think I have 4 guys with SY 996 gt3's with my exhaust on it. One guy in Canada is coming down today actually. Then you two and joes friend.