Sorry for the newbie question but I just can't find any reference to this. Is the factory exhaust a dual mode PSE exhaust, with the standard dash PSE button?

 

It does not. I do not even think there is an option for it.


The car will make a little more noise when in sport and sport plus mode as the turbo veins are moved and that causes a different pitch in the note.


Kline makes a great bolt on system.


Mike

 

I've already reached out to Felix. I just wanted to give the stock exhaust a chance first if it was PSE.

 

No PSE in the 991 Turbo and Turbo S.

The stock exhaust sounds dreadful if you ask me. To really enjoy the car an aftermarket exhaust is required in my opinion.

There are many good options out there.

This forum has many Kline customers who are all satisfied to my knowledge.

Other excellent exhaust for high flow cats include Europipe and GMG. Tubi makes one as well.

For catless exhaust Kline makes one. I use the Tubi catless race exhaust which I love. Fabspeed makes a catless exhaust as well but it is too loud for my ears.

Here are some videos of my Tubi catless race exhaust:




https://youtu.be/8qTjiWr3Vuk

Here was my car with Europipe:

 

We make a great full 3" X-Pipe solution. The 997.2TT really requires a 3" system as shown below to be heard well...we also produce it for use with OEM tips, but that necks down the pipe size, flow and sound a bit.

 

Which of these systems have drone and which do not? Because it will be a daily driver I need a drone less system, unless the drone is very subtle and the gains are huge over a quieter system. John thats a good looking system!

SDG - why did you change from the Europipe?

 

Neither EP nor Tubi catless have drone. I switched to the Tubi catless race exhaust from EP so that my car's tune could turned up more For an additional power gain. There is only so far a tuner will push a car with any cats on it for fear of high exhaust gas temps frying and damaging the cats. Once you remove the cats the concern about high EGTs goes away.

The added benefit was even more sound and the car shoots flames and booms loudly when you floor it when the headers are already hot, increase revs to a high rpm and then let off the gas.

I drove a friend's 991 TTS cab about 50 miles with Fabspeed catless and found it very droney and way too loud for me. I have NOT heard that complaint from Kline catless owners

 

Thanks. And no drone...

 

this looks amazing. Does it help with reducing the pops and crackles? In the 991’s?

 

Thanks! Any higher flowing aftermarket exhaust will accentuate the pops and gurgles. It's simply physics. Less restriction = more of all sounds out. The 991.2 in sport+ is programmed to eliminate the big pops and gurgles, sport mode has them built in to the programming.