Is There Such A Thing As NO DRONE Aftermarket Boxster S Exhaust Muffler?
 

Is there such a thing as a no drone aftermarket muffler?

If so, please advice where I can source one?

Also, for anyone has experience with one of those ebay modified factory Boxster mufflers, how loud are they? And are there any cabin drones between 2500-3000rpm?

Thanks for any inputs.

Here is a link for the aforementioned ebay modified factory muffler: http://cgi.ebay.com.au/Porsche-Boxster-986-3-2S-Sport-Sound-Muffler-Exhaust_W0QQitemZ290123394166QQcmdZViewItemQQptZUK _CarsParts_Vehicles_CarParts_SM

I've been researching this for nearly two years. If you want no drone whatsoever, you have to do a complete exhaust system swap with a matched system of headers, high flow cats and muffler.

I cannot remember the name of the company who produces it, but there is a system out there that has no drone and is $4000.00.

Evidently a nice and loud and resonance free exhaust doesn't come cheap.

But that modded muffler will give you more sound without any drone.

I don't think so, but you can build your own:
http://www.pedrosgarage.com/Site%203/Make%20the%20Pedro%20Sport%20Exhaust.html

Every exhaust has drone,even the OEM,just a matter of it is noticeable or not.

Come on now, don't be like that. Everyone knows what I mean. Obviously I was referring to noticeable cabin drones.

Agreed with every exhaust has drone.

Your stock one does, its just not loud/annoying.

Im not 100% positive about this, but fabspeed is supposed to have little drone because the two mufflers are connected to one another.

Yes that's just like the ebay muffler I posted the link above. I wonder how much louder it is compared to the OEM Porsche sports exhaust.

PSE...definitely,positively no drone(noticeable drone=it's all relative- but almost all people who has the PSE system can/will attest to that, myself included). IMO, the louder you go, the more chances of increased drone. The Pedro exhaust hack does NOT have the same sound of the original PSE(check & compare in YouTube). The Pedro hack is waaaay louder than the PSE. GBP=500./ AU= 1,115.00 for 2 bypass hack pipes is asking an Arm and a Leg.

Thanks. I like the idea of these ebay mufflers since I don't want to modify my own, would be handy when it comes to resale of the car.

I installed a Dansk "sausage" muffler and had some drone at about 2.8K RPM, but after I later installed headers (retaining the second set of stock cats), the drone disappeared. I guess there must be something about the difference in resonance between the muffler and headers that canceled each other out. Not really sure, and don't really care - all I know is that I don't have the problem now.

Drone definitely has something to do with the weight of the muffler and its ability to resonate noise.

More weight = less drone.

Just look at how heavy the stock & PSE mufflers are.

On the other hand, a straight pipe is the lightest and has maximum drone.

As far as I know this mod is (almost) drone free and sounds great

I went buy the local muffler shop on Friday to see if he could do the PSE mod on my '03. He was uncomfortable trying to use anything bigger than 1" for the bypass. He was going to call around to see if he can find the pipe and 90's necessary. Hopefully I will hear something today and get the mod done soon. He is pretty sure he can mock it up and install it without droping the muffler. That would be nice.

I have done the Pedro Mod....
 

I like it, no drone....but I was surprised....I thought it would be louder. Very nice sound at 2700 rpm, and then again above 4k. It also has a meatier rumble at idle.

Here is what I did:

Removed muffler, bought 1/2"copper pipe to bend (to get the shape).

Took that to custom muffler shop, tried to get stainless....just couldn't find what I wanted, so I used the 1 1/2" "alumanized" pipe, he bent it.... I took those home, started forming new pipes to fit, plus cut holes (3/4"- 1") in ex. pipe before muffler. After that, took everything back to the muffler shop, he welded, I took everything home and installed. Cutting the holes with the dremel took a lot of "bits" and a lot of hours (6). I think if I would have made the holes in the existing pipes closer to 1 1/2", the sound would be louder, but like I said, I am happy with it.

I did get a price from a shop to do it $500+!

My cost was probably $60-$70 in parts ($20 for dremel bits....get a lot!)

I have post this numerous times, if you do a search. My car, an '02 S was in need of some sound. I found a modified muffler from another poster, which was done by Oettle's in Germany. Pedro has a similar mod, except for the placement of the bypass pipes.

My car also benefits from an Evo Hi-Flo intake and Fabspeed bypass pipes. Sound is very good; low rumble at idle, GT3 like scream at 3800 rpms. No resonance at highway speeds.

This is one of the best bang for buck mods you can do for your car. Sorry about the crappy pics...best I have at the moment.

I also have had the Pedro muffler mod done to my car. If you are concerned about resale buy a used muffler off of ebay, print out Pedro's instructions and take it to a muffler shop, that's what I did. IIRC I was charged $125 for the labor and it took them about 3 hrs. Of course, I am in the city of Chicago and there are small muffler shops on every corner.

But, even with a little higher labor charge and a used stock muffler and you will still be well under what they are charging on ebay. When you sell your car, switch back to your original muffler and sell the modified one on ebay for probably close to what you paid in total. It's a win/win. :cheers:

Does anyone have the NHP muffler from Maxspeed Motorsports?
The eBay ad (Item number: 360090180636) claims "no cabin drone".
Reviews I have seen on their headers have been pretty positive, but I haven't seen a comment on the muffler and cabin drone.

I have the NHP muffler on my car and I do not notice a drone and there definitely is no resonance. Of course I have different headers and the mid-pipes with hi-flow cats so the drone may be masked by the shear difference in volume. :)

Drone on exhaust
 

panameras, i got this info on another forum. it maybe worth checking out ..seems like high quality, a bit louder but not obnoxious as per owner's claim..
Speedtech Exhaust... check their Website.

I tried several mufflers and they all had that annoying resonance. One I found that gives a higher-flow rate without the resonance is the Dansk sport muffler. It looks like our OEM mufflers, but with different internals and higher flow rate, at least that is what the folks at Dansk said.

I did a before and after dyno with the stock muffler and the Dansk, it was really too close to call. The dyno said I picked up 2-3 hp, which, although probably within the range of error of the Dynojet dyno, speaks to a little better flow rate with the Dansk.


Ed

:cheers:

Is this what you were referring to? The 2nd, 3rd and 5th items on the page?http://www.design911.co.uk/fu/pt63_398_-cma81-cmo82-ct289/Porsche/Boxster/Boxster-986-3-2L-1999-02/Exhausts/Silencers---Mufflers/

"Is this what you were referring to? The 2nd, 3rd and 5th items on the page?"

It was the second or third item on the page, not the super sound tips version, which, as I understand it also has a higher flow rate. Of the two dansk mufflers with dual tips, one has standard flow rates, the other has a higher flow rate, but I forget which one is which. At the time I got mine, I contacted the US distributer of Dansk mufflers who was very knowledgeable and helpful in selecting the correct muffler for my application.

Ed

:cheers:

I have the Fister modification which is essentially the Pedro mod. Sounds great, with no drone. I am completely satisfied and would highly recommend this mod. The cost is minimal compared to a new muffler. http://sfbay.craigslist.org/eby/pts/1056416416.html
The 911 version is pictured. The Boxster version is similar to the others pictured in previous posts. Daren was a pleasure to deal with.

Right pipe for pedro mod?
 

The guy down at my local muffler shop hasn’t had any luck finding some pipe that he thinks will work for the Pedro mod. He was trying to track down something with a 1” diameter and light enough that it won’t pull away.

For those that have done that mod, what type of pipe did you use? This mod is being done to an ’03 so the pipe has to go up and around. There doesn’t look like there is much room up there for something much larger than 1”.

Please let me know what kind of pipe I can tell my muffler man to use and if possible, where he can find it.

Todd

My Oettle modded muffler goes up and around as you've described. I believe my bypass pipes are 1.25 OD and clear the rear with my diffusers, without issue.

Pics aren't the greatest, but you get the idea.

Mine was done with stainless steel tubing. Find someone who can fabricate with stainless steel and they should be able to help. Stainless will not rust and looks great.

It's stainLESS.

The cat I am talking to doesn't have a die to bend stainless that small. We were hopeing to get some pipe and some 90's to weld together. I am not worried about a smooth gas flow.

Just Google SS tubing, their are many sources of straight, 90', and 45' elbows. Off the top of my head Burns stainless.