Titanium mufflers

m110 · 07-06-2013, 04:33 PM

In my business I deal with titanium products frequently

The current state of the art exhaust seems to be Akrapovic

Car Exhaust

They do not, as far as I am aware, make a product for air cooled 911s.

I noticed this unit for sale with DP markings. Does anyone have any experience?
There are certainly issues of cost/weight savings. I am not asking about that. An M&K or BB muffler is pretty light. I have not seen any reviews of this product.

Auspuffanlage Titanium dp11 3,2 l

widgeon13 · 07-06-2013, 05:10 PM

2000 EUR. That a lot considering other options.

m110 · 07-06-2013, 06:09 PM

Quote:

Originally Posted by widgeon13

2000 EUR. That a lot considering other options.

Yes. Expensive.
2000 Euros. 4.6 Kg.
I am not advocating for these products, just asking if there is any experience in the community.
The questions I have are sound, longevity, bling, mass, heat dissipation, flow, performance, drone, longevity, fitetc.
With Monty Mufflers at $1650 for some models, Oe from the host $1570.50, brushed M&k from host $850, billy boat $1034, Fabspeed $995, it appears to be in the range.

Arne2 · Arne2's Garage

IMO, for a 3.2 like mine there's way too little benefit in HP or weight to most of those listed. The raw M&K at $750 or so is pushing the cost/benefit ratio pretty hard - the rest are more money than they are worth.

Reiver · 07-06-2013, 07:22 PM

an M&K stainless is only 1.5 lbs more in weight...so you are paying 1350 bucks for 1.5 lbs.
Sounds efficient to me.

TimT · 07-06-2013, 07:28 PM

Quote:

The current state of the art exhaust seems to be Akrapovic

We are a dealer, we have installed a few....

Nice pieces, fit well, sound great...

Having said that.......

Tippy · 07-06-2013, 07:35 PM

That brand I recognize from the sportbike world.

m110 · 07-06-2013, 07:44 PM

again...I am not advocating or interested in making cost/benefit decisions.

Just asking for those with experience to share it.

TimT...I assume you have installs for 996/997/991?

Anyone have the DP model for 74-89 911?

RWebb · RWebb's Garage

no experience, but I looked at these some years ago re wt. savings

you might want to contact a guy in NYC - go to Rennlist 964 forum and find the pinned thread on the 964CS that he is building

Robert is or used to contract to Porsche Motorsports and has fabbed up some muffler designs for that car - if anyone knows, it will be him

TimT · 07-08-2013, 02:23 PM

Quote:

I assume you have installs for 996/997/991

Yes... we did an install a few months ago cost for header+muff in Ti were a bit north of 10K

Reiver · 07-08-2013, 02:56 PM

Quote:

Originally Posted by TimT

Yes... we did an install a few months ago cost for header+muff in Ti were a bit north of 10K

Interesting...like in whoa! What is the real benefit in the titanium? If the design is straight forward then simply weight? What was the weight saving over Stainless per pound?

TimT · 07-08-2013, 03:10 PM

We should have asked the owner to do some dyno pulls before and after....Not sure how many of these we will be moving.....

In the case of our last install it was on a GT3 so we removed a great stock exhaust and installed a great lighter weight system...

Whether the Akropovic system made more power than the stock GT3 header muffler. is something I cant answer....the mfg claims more...

It is lighter, and removed from the extrema of the car, a good thing....

Some people have these installed on their cars so they can say "I have Ti headers and muffler"

I believe upwards of 10K for a header and muffler (that is just parts) is just insane....some people just have much more disposable income than I could ever imagine..

Reiver · 07-08-2013, 04:14 PM

Thanks Tim. If you want it and can afford it buy it.
I appreciate weight savings but wonder how much would be saved over a similar aftermarket SS unit.
Every aftermarket exhaust co. makes "Improved HP" claims and some may even be true...but you rarely see a before/after dyno confirmed by a 3rd non associated source.
OTOH..."Improved HP" is meaningless unless it is a wide rpm band and does not lessen torque in other critical areas...often it is just a HP bump at peak rpm that most folks never or rarely use...and often at the expense of mid range torque.
Luckily for most makers their 'sporty sound' makes everything go faster....

rusnak · 07-08-2013, 04:21 PM

Titanium, not Inconel?

froggert · 07-08-2013, 05:56 PM

i have an akrapovic full ti system on my ducati 1098. construction and fit were perfect. the headers are now a pretty blue color. the whole system is so light that when i received the package, i thought i had been ripped off and gotten an empty box. seriously, i think the packaging weighed more than the exhaust.

i have absolutely zero experience with their systems for 4 wheels. but for 2, there is a noticeable difference between ti or cf versus ss. no clue if or how that translates.

pkracer21j · 07-08-2013, 06:07 PM

contact Patrick at DP He speaks very good english and can advise you on the sound levels, I've seen his stuff in person and I promise you the quality and attention to detail will blow you away!

RarlyL8 · RarlyL8's Garage

We can produce any of our products (321 is standard) in Ti, or Inconel. Very rare to do so because of the cost/benefit ratio makes no sense. Our 321 mufflers weigh from 10-13 pounds depending on options. Weight savings and sound are what you pay for unless the engine is modifed to the point where the stock muffler is a restriction. Our headers weigh 15 pounds which is a real savings, but again you need a modified engine to reap the power benefits. We are currently developing a race/street system that will extract every last 1/4HP possible out of the 3.2L engine. It won't be cheap but a true bargain when compared to high end outfits like Akrapovic.

Tippy · 07-08-2013, 08:23 PM

I'll vouch for how light your mufflers are, pretty amazing being SS. Sounds great too.

Uncle · 07-08-2013, 09:30 PM

Quote:

Originally Posted by Tippy

That brand I recognize from the sportbike world.

Quote:

Originally Posted by debraarzn

That brand I recognize from the sportbike world.

Well I am glad we got that sorted out then...

Reiver · 07-09-2013, 12:05 PM

Quote:

Originally Posted by RarlyL8

We can produce any of our products (321 is standard) in Ti, or Inconel. Very rare to do so because of the cost/benefit ratio makes no sense. Our 321 mufflers weigh from 10-13 pounds depending on options. Weight savings and sound are what you pay for unless the engine is modifed to the point where the stock muffler is a restriction. Our headers weigh 15 pounds which is a real savings, but again you need a modified engine to reap the power benefits. We are currently developing a race/street system that will extract every last 1/4HP possible out of the 3.2L engine. It won't be cheap but a true bargain when compared to high end outfits like Akrapovic.

Thanks for the honest response