Nope. Refer to post 2 and 18 in the thread.

this would make a good garage sign

Don't laugh just yet, but I wonder if something like this, can be used at the back of an aircooled car?
https://www.gumtree.com.au/s-ad/silverwater/engine-engine-parts-transmission/porsche-boxster-986-2-5-2-7-3-2-stainless-catback-exhaust/1187483784

Certainly cheap - they sell for 330$ on eBay. However, I can't find any dimensions? They do mention collecting pipes are 2" and tips are 3", but would be nice to know the width.

Would it fit though … mufflers might need to be turned to be vertical?

Here is a video I took yesterday, with my Dynomax 17231. I still get a weird resonance at around 2200-2400 rpm.. and the engine doesn't accelerate cleanly through that area.. but once it gets to 2800 it is free.. You won't hear that much in the video, but I tried to capture the exhaust note bouncing off walls and when entering on ramps.
It is MUCH louder in real life than what appears in the video. At low rpm, it sounds "throbby"... like a WRX on steroids.. above 3000 rpm I TOTALLY LOVE IT!

https://youtu.be/lHwo2oed1Ac

Haha too funny, I took a video of mine too to showcase how loud it is! For those watching at home, my setup uses 2.5" pipe where Mike's is 2 1/4" I think. Same 17231 Dynomax though.

https://youtu.be/XuH19m54HLo


Here is an idling walk around...
https://youtu.be/4shrd8Qr7hA

Nice videos guys!! Do any of you know the weight of the 17231? My Dansk is 24lb.....

Shaun
yes, your walk around video makes it sound a lot louder than mine. What size header diameter do you have? My Georges headers are 1&5/8.
And yes, I have 2.25 inch tubing from the headers into and out of the muffler.

I'm most curious though.. how does yours run at lower rpm.. are you having any resonance issues like I am having? I find that between 2000 and 2800 rpm, my engine doesn't accelerate too well and I have a weird vibration. But once I push through it, it sounds amazing up top :)

No issues on mine accelerating thru the low rpm range at all. I guess the different pipes sizes could result in mine being louder. I don't know the primary pipe sizing on the headers but will try to research and update here.
My bill boat did sound really good. It was less racy but more...refined. heavy as crap though.

I think your issue down low must be in the tune.
One thing I've noticed is it isn't always the ve or the ign timing that can cause issues. Lots of decel and Accel features, iat trims, injector timing etc that can cause them too.

Sounds great mike....ugh those speed limits 90kmh on a 3 lane freeway. What a disaster.

Maybe the resonance is in the intake not the exhaust?

Inclined to agree with this- I haven’t found these motors sensitive to exhausts in terms of how they run; my fabspeed exhaust you could plug one outlet and it would still run smooth (definitely lose some top end though)

finally got results
 

The TurboHoses/Sports Purpose Garage muffler system delivered what we wanted. My car has been the test platform since the smaller version (On Mike Small's Car) was completed.
As we guessed, any of the commonly available systems choke down bigger bore engines like my 3.6. I suspect any engine that breathes well (2.8RSR/3.2ss/3.4 etc) are giving up big power with any of these setups. For reference, I run 1 5//8" ID headers on it.
The dyno chart has three runs on it:
BLUE: Dansk Sport
RED: Open Headers
GREEN: "Barry White" (Smooth and Deep) Muff system.

Peak power is up about 7HP/14TQ, but WHO CARES??!! Have a good look at the area UNDER the curve. From 3000-4200ish, there are 25-30 HP/TQ freed up and 4500-6200 we are again freeing up 25-35.

It doesn't drone and you can have a conversation at 3000-4000rpm cruising. It still has a proper Porsche sound without the raspiness or drone that makes some other systems intolerable.

We are still testing another version with slightly different pipe diameter and mufflers, but we are close to being able to offer them. Will post those results also.http://forums.pelicanparts.com/uploa...1553015403.jpg

Here is a link to the video. Huge thanks to John Holleran (Holleran's Performance) for the killer 3.6 and custom cams and Hoover at Turbohoses for making time for this project.
https://youtu.be/H8Csq-udk4U

Erik, that's really good. Is this the muffler used?
https://vibrantperformance.com/catalog/product_info.php?cPath=1022_1031_1110&products_id= 1837&osCsid=4a1975b7e9e6bf9e6869eed09e71cf16&fbcli d=IwAR14Ray2cBQY30CKFeotFNZCojzlMk6SDN-wL3c4SwyaXJLTRLUkgFvxWd8

Being all the way over in Australia, makes it difficult for me to get my hands on stock and shipping is nuts, but if you can share with me what mods are needed to be made, perhaps I can have a shop over here, recreate this?

Mike, that looks like the one on Mike Small's car. We are using a different setup on my car and the larger bore cars

Here is a walkaround of my car and also a couple of quick runs onto the freeway.. Sounds better through headphones. I am using the dynomax 17231 with 2.25 inch piping.. forgive my Australian accent.
Jump forward to 1;15 for the driving.

https://youtu.be/_l2cQcSn5fk

And here is a basic comparison of the different results my mufflers have given me so far.
https://i.imgur.com/cqVA9BH.png

The 17231 has proven pretty quiet, On the muffler above it was hooked up wrong and blew the fiberglass sound gathering material away on one side, he has it repaired and should have back today. I hate they plumbed it wrong for him. I have tested the 17231 on about 9 motors since the first one, It really does well on the larger motors. I spoke with Mike the other day as we know Dynomax numbers can be low or high but he was able to run his car against a 3.6 on a 915 in a light car and they were even. We were trying to make 250 hp to the wheels and I think that is a fair estimate of where it is presently, the M&K was about 26 hp less at the wheels but nice product for stock motors. William Knight
knightrace@mac.com

This muffler is interesting, seems very open straight through design that allows for some mixing of left and right banks. But overall each bank has a straight shot through the muffler.

Is that correct?