So there's obviously a lot of information already in this thread, but I'll just add 2 cents since you did mention Tubi as one of your choices.

One thing you need to be very careful of in the Panamera is DRONING. I know this from experience because we tested at least a dozen different variations of exhausts before settling. This is the main reason why we chose to make the Tubi system a rear section only. Removing the center resonators added way too much cabin noise that just didn't suit the character of the Panamera. We also tested a few prototype non-valved versions, which we also found to be a bit loud. In the end, what we though was the best sounding version was a valved rear section.

Naturally, doing a complete cat-back system with a non-resonated mid-section would be the optimal choice for performance, but there's simply no way to gain a recognizable increase in performance without really opening up the exhaust system, which consequently makes it louder. The problem with the Panamera is that Porsche spent so much time trying to isolate outside noises from entering the cabin that when they do, they get trapped there!

Personally, if it were up to me, I would just add a rear section (ours or anyone else's), and then if you want increased performance, get the GIAC software and give yourself an extra 100hp to play with.

Here's a link to the Tubi WITH a video.

http://www.championmotorsport.com/pr...i-pnmt-exv.htm

 

First of all, I originally installed Fabspeed exhaust and the drone was so horrible you could not carry on a conversation at highway speed and the fact they gave me a headache. Took them off and installed the touring edition from AWE. These are possibly the best exhaust that I have ever heard. The perfect balance between aggressive and roadability with no drone whatsoever. Also when accelerating you can hear the thrust of the turbos with a noticeable performance enhancement. Very throaty exotic tone, unlike the factory tinny sound.I am very picky and will say anyone will be very happy with this exhaust.

 

Hey Tom, long time no see, I hope everything is going well. I do have a quick question for you.

While exhaust note is very important, I rather have performance, so here is my take. Straight pipes (eliminating cats, I love FL) with stock everything else including OEM resonators etc... and add a tune.

Technically the greatest restriction is in the 700-million cell cats that we have. So if I bypass them how much restriction is left from the stock mufflers and resonators? I would guess not as dramatic as the Cats but what do I know. Are the OEM mufflers restrictive to the point that will make a difference if we go aftermarket?

I'm curious as I'm about to jump in the exhaust bandwagon.

 

I would like to know as well. No cats, OEM everything else.

 

I went with fabspeed downpipe 200 cell cats and
x pipe
left the factory mufflers
no drone

this answered all questions of OP, better sound, not tooo loud, and much better performance, IMHO this is THE way to go. also keeps valvetronic mufflers working.

 

Would love info on the Remus for a Panamera 4S w/ sport exhaust

 

Tom - I ordered the fabspeed downpipes and x pipe and will be running them with the factory mufflers - after reading the previous post complaining about drone with this system I'm concerned. Can you confirm you have no issues with this setup. Also how often do you open/close the valves now. I run mine open all the time and did the same with my previous turbo - just wondering if the added volume from the downpipes and x-pipe creates enough noise to leave the valves closed on some occasions.

 

I am a Remus retailer if you ever need a system. They currently do not list an offering for N/A Panamera vehicles.

 

If you are doing what I did you will be very happy. there is NO drone. the car sounds good with the valves closed and awesome with them open. car also performs noticably better, with turbo spool and acceleration.


I think this is the best way to go if you already have the sport exhaust. the mufflers are fine and also are worth $3500!

the only thing I would recommend is having someone who knows what they are doing do the install, otherwise you really cant go wrong

tom

 

Nice. Please report feedback on your setup. Was close on getting Fabspeed downpipes too but I am now thinking about running custom set of downpipes completely catless hoping its not extremely loud.

 

Cats-less is the way to go for best performance. With the rest of the system OEM it should not be too loud at all.

 

that will be fine but unless you have a tune you will get a CEL. I didnt want to "tune" my S as already started a 550hp.

the fabspeed 200 cell cats do not give a check enging light so I like that on my street car

Also I recommend (IMHO) a BMC air filter and an IPD intake plenum

my above set up gives the engine (air pump) max intake and out put with least restrictions

I have done the above and very happy, I have nothing to do with the companies, but they are excellent to me

good luck!!

tom