991.1S with PSE.
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Is there a product that will give me a slightly higher pitched or equal tone with no drone and add 10 to 15 hp without a tune ? No emissions testing in my state. Not looking to go headers as I want to be able to swap out fairly easy if necessary.

 

You can't have your cake and eat it, too. Any removal of existing equipment that isn't being replaced with like equipment will increase drone. Sport cats, cat deletes, headers, muffler bypass, etc. -- all will increase drone and volume to some extent.

You get power by removing restrictions in the exhaust. Without going into some crazy helmholtz setups, you can't remove restrictions without resulting in more volume and drone, among other potentially undesirable effects. It's just the nature of the beast.

Soul has videos of almost every exhaust configuration they offer available on their product pages, those do a pretty good job of letting you know what you're getting into!

 

Sport headers with high flow cats do not have drone. My exhaust (iPE) has no drone and Soul customers testify to the same.

Headers/cats = HP
Exhaust = higher pitch/sound but no HP

High pitched exhaust options are iPE and Kreisseg

 

Yes, SOUL headers with high flow cats. Amazing! Sound is amazing and the increase in power is felt. Understand that NA cars respond differently to FI cars when power is increased, but when I added those to my old 991.1 S, best mod.

 

He is right. No drone in that setup. The increase in HP and TQ is throughout the entire powerband.

 

I just installed some used Fabspeed catted headers. No drone whatsoever and def added some bottom end. Car sounds a little more exotic.

 

Nice Pickup! What exhaust?

 

I put Soul long tube street headers headers on my 991.1 C2S. Love them! Sound great with the PSE open and the engine singing it's song. No drone at all, valves open or closed. Butt dyno tells me things are a bit more peppy, but I have no numbers to back me up. Pretty easy install, and I can swap the originals back in if I want.

 

Running it with PSE right now. I have a valved Cargraphic muffler I can install if it’s not enough for me.

 

I bought pair of FVD 200 cell cats to replace the OEM ones on the headers but will keep the OEM headers. The car has PSE.
Will report the improvements.

 

Can you provide a link ? Did you change cats or just headers with pse as this seems like a good option.

 

Still very happy with them. Don't feel the need to reinstall my X pipe muffler for more sound, though I haven't listed it for sale yet. Happy with the volume from Headers + PSE. Definite seat of pants gain in power, especially down low.

I bought them used from RL marketplace for a hell of a lot less than they sell for at retail, but any quality catted header should perform about the same, so buy whatever you can get the best deal on.

Install was pretty simple, however on of my O2 sensors was seized in the OEM header so I had to replace it which added some extra hassle as the connector is.... no where near the headers and actually behind the tail light...

What I installed
https://www.fabspeed.com/porsche-991...ers-2012-2016/

 

I have my 200cell HJS cats welded on my OEM headers today. 800 cell out, 200 cell in.
I also took the pictures of the cats to show the difference between 800 vs 200.

 

Today, I took some dbn acceleration data after the cats were installed on the car. I also had some stock run dbn data to compare with. They were taken on the same road, with the same tires, under similar temperatures (September midnight vs March noon time), but I’m not so sure about humudity. Anyway, take the results with a grain of salt.

 

Did you feel the lower RPM gains? I didn’t necessarily feel anything up top, but coming out of slow corners, for sure.