A/S

^^^^Can you ask your shop to measure the outside diameter of the upper pipes, the ones with the silencer?

You had one of the first JCR race pipes in your car. My .2 GT3RS has one of the first JCR Silenced Race Pipes. Jonny claims that the new valved system is quieter with valves closed than my silenced race pipes, but I have bigger silencers, so the only way the the valved race pipes are quieter with valves closed is that the upper pipes are on a small diameter.
I'm super happy with my JCR Silenced Race pipes, but I had to go back to stock headers, as my Akrapovic headers combined with my JCR were a little loud, and I run events with a sound limit. Unfortunately, going back to stock headers, I lost 0.05s to 100mph, and 0.15s from 60-130mph, so the car definitely lost power, but it is still faster than stock (the stock 991.2 GT3 RS muffler is a bottleneck on the outlets) based on my acceleration data with the stock car.


Thanks

horns

Was it too loud to your ear or just too loud to pass events with sound limits?

Z06

Very nice, curious how you like the sound, any drone?

Wonder if it's too loud for in city driving?

How much weight did that save vs, stock?

Jimmy-D

You still happy with your Silenced race pipe?? Those race pipes have no valves??

Jickel180

Would love to hear this on a .1 GT3. Been trying to convince myself to pony up over something else like a CMS bypass.

hashash

Any feed back ?

drdonger

How does it compare to you non valved version? I just placed an order on the non valved version. Can't wait to try it out.

A/S

Mega happy, except that I have to run stock headers or the car gets louder than my comfort zone.

Best sound 991 GT3. I run with plenty other 991 GT3s, and mine is the one that gets praised the most for its sound.

I don't have valves in my Silenced Race Pipes. The straight JCR race pipes must be super loud, and same should go to the valved race pipes with valves open.

sunnyr

Any drone with the silenced race pipes?

Brosef

mine just arrived. I'm scheduled to do the install next week, so will update post my thoughts next Wednesday.

hashash

Why not a single review till now ? I am also expecting mine to ship later this week !

Brosef

just measured it. outside diameter is 2".

A/S

Thanks Brosef.

The stock center 991.2 GT3RS muffler has 58mm inner diameter outlets, this is the bottleneck for the entire system. Per Porsche that's enough to handle the 9k rpm at full throttle needs.

My Silenced Race Pipes are 70mm OD, and per Jonny (JCR) the ID in the silencers is 63mm which is still bigger than the factory 58mm. I just want to put headers back, but the sound level increases beyond my comfort zone.

Definitely, these JCR Valved Race Pipes will be more quiet than my JCR Silenced Race Pipes (when valves are closed), and plenty louder with valves open as they will flow through 70mm Titanium tubing all the way.

A/S

Barely noticeable, not annoying, I'm fine with it, it is in the 2,400rpm-3,700rpm range but it isn't there for the entire 1300rpm, just about 400rpm-600rpm and depending on the throttle position.

The stock exhaust with the 3 mufflers and valves disconnected drones a lot more than what I have now.

Actually, with the single pipe side deletes (Akrapovic or FVD) I had a little drone that I disliked, and still ran Akrapovic headers, single side pipes and stock center mufflers as my favorite setup. I have installed and tested many different combinations in the 991.1 and 991.2 GT3RS.

A/S

Too loud to pass sound, but fine inside the car with or without a helmet. It blows 102 dB - 106 dB with Akrapovic headers, it would be louder on catless headers, and my system is the quiet version of the JCR Race Pipes.

With the stock headers, it is fine, does around 98 dB at full throttle and 8500-9000rpm (measured at 50ft), and I can have Bluetooth phone conversations. But this is not a quiet system, it sounds awesome, but it is solid loud (not ear damaging or annoying loud). The sound level is higher than any center bypass or side bypass I have tested.

I run Soul Performance Resonated Tips, not the stock tips, with the stock tips I would blow 100dB-104dB on the Silenced Race Pipes. Bonus for the Soul Performance Tips: 2 minutes to v-clamp the Turndown pipes for more sound reduction, and no lose on performance.