John D II

For anyone considering a new exhaust for your 991.2 - you may want to wait a few weeks before deciding......Our 2017 Porsche PSE exhaust development is officially underway. Over the next 2-3 weeks we will be developing our direct bolt on replacement X-Pipe, designed to replace the OEM center muffler, as well as our direct replacement, high flow catalytic converters that will bolt in place of the OEM converters and mate to the OEM muffler. All components are mix and match with OEM PSE components and can be installed independently or as a complete system.

The SpeedTech 991.2 X-Pipe will feature our signature True-X design for a truly outstanding exotic sound and will utilize vacuum activated sound valves, exactly like the OEM PSE system. This will allow the user to retain the factory switch options that come standard with the OEM PSE exhaust, allowing the operator to choose the desired sound level with the switch in the car - same as OEM PSE.

Below are pictures of the development car getting ready to go up on the lift and then the OEM PSE system removed. Jig fabrication is underway, key components have been scanned and we are focused on delivering the best sounding aftermarket exhaust option available for the 991.2

Once this new system is fabricated, tested, refined and perfected, it will be heading to our private test track for an extensive camera and go-pro video session. Stay tuned for updates and video.

John D II

UPDATE: We made major progress on our 991.2 exhaust project over the past week and are extremely pleased with the results. Pictured below is a completed set of our new 991.2 high flow catalytic converters, utilizing the larger 5", 130mm, HJS "directional" cores.

The first configuration up for testing was the 991.2 OEM muffler with our new HJS high flow cats. Similar to previous Porsche Turbo models, we found that improving the exhaust flow with high flow cats enabled more rapid turbo spool, improved power delivery, crisper throttle response and a very nice, enhanced turbo whistle note in sport mode. The sound difference is subtle over the OEM cats. In our opinion, upgrading the cats is a performance upgrade with a very slight bump in sound level and a little added turbo spool sound. The character of the sound remains identical to OEM, power delivery is enhanced and the car feels noticeably quicker.

Our plug and play 991.2 valved X-Pipe should be ready for testing/video over the following week. The modular design of this system will allow each of the components to be used independently of each other (SpeedTech Cats/OEM muffler or OEM cats/SpeedTech X-Pipe) or in unison (SpeedTech cats/SpeedTech X-Pipe), as a complete performance/sound package. More to come...

John D II

Here's a look at our final 991.2 X-Pipe design. We had a chance to fire it up today and the sound is incredibly good. Not too loud, but very sporty with valves opened up - extremely tasteful and well mannered with valves closed.

Our X-Pipe is designed to be used with either OEM catalytic converters or SpeedTech High Flow cats


Full SpeedTech 991.2 exhaust system - X-Pipe with SpeedTech High Flow Catalytic Converters

stephen k

This looks great. Any sound clips and dyno charts on x pipe + stock cat vs x pipe + HJS cats?

sechsgang

I'm waiting for sound clips as well

John D II

We have a lot to share - we just spent an hour at our test track and have a lot of video to edit. The system sounds incredible - the owner was there with a friend for a demonstration and to pick up his car and they were both in love with it. IMO and theirs, we hit a home run with this system. Both in sound and performance.

We have a few comparisons of start up with a few throttle blips in the shop and a then very short run of total OEM compared to our Hi-Flow cats with the OEM muffler from yesterday, loading to you tube right now. I will link as soon as it's ready. I felt that the cats really helped the car out from a performance standpoint. The owner agreed. He felt they transformed it into a rocket. Videos shortly!

Driven991

Everyone feels something when they just spent money...a lot of money on it.

However I am interested in an after market exhaust for my .2 C2S and I feel the need for objective data and sound clips/video before I can make up my mind.

John D II

Here is a sample of some video comparisons between the complete OEM exhaust, OEM muffler with SpeedTech Hi-Flow catalytic converters and SpeedTech X-Pipe with SpeedTech Hi-Flow cats.

Driven991

Hey man you were right...it does sound nice! Any data regarding HP and torque or only seat of pants?

Approx price for whole system? PM me if you like.

rkwfxd

Looks good sounds good. Please let us know if/when it is CARB legal in California.

sechsgang

I'm way interested. Please let me know the details. this is the nicest I've heard yet. Would be interested in hearing how it sounds with OEM cats and the x pipe only as well.

sechsgang

Duplicate Post.

John D II

Thanks! The owner of the test car did not wish to dyno, but as one of the prime suppliers of Porsche turbo exhausts for previous generations, we are certain of power gains with high flow cats on any Porsche turbo. In this case, it was easily detectable via seat of the pants.

I will PM pricing shortly, our 991.2 web page is not up yet and we are running an introductory special price on these systems.

Thanks for the kind words. The catalytic converters will probably never be CARB legal, but if you retain your OEM cats and then use our Switch-X X-Pipe as a sound upgrade and mate it to the OEM cats, it will be retain CARB compliance and be legal immediately. That's the way...

I feel confident that you would be extremely satisfied with this system - words can not do it justice. We have a very well respected reputation for developing what many consider the best sound on turbo Porsches (see our testimonials). Unfortunately, the OEM cat/SpeedTech X-Pipe video was lost in editing and the test car is back in the owners hands now. I can say that the sound level difference is similar to comparing the complete OEM system to the OEM system with our Hi-Flow cats, except the tone changes to slightly more aggressive, whereas the OEM muffler with cats provides a louder OEM sound character. Either is a great choice, both together is the best for sure. Everything is modular, so you can change one piece only, then change the other one later, if you prefer to do it in stages and see what each does....

John D II

OK, Here we are putting the new system through the paces today at out test track!

sechsgang

Sounds pretty epic. Please PM me pricing, and also...have to ask, any drone with the system at all?