992 GT3 JCR exhaust before and after DB’s, drive by sound, and impressions.

This video shows two of the exhaust systems available from JCR for the new Porsche 992 GT cars.

[@rb8841]

Excellent video! Very comprehensive and to the point. I’ll be installing JCR on my 992 GT3 RS whenever it arrives. Look forward to watching more of your videos. 👍

[@mufflertech]

Thanks RB!

[@Toadster88]

Excellent video! Keep ‘em coming!!

[@ale7501]

Super professional video, Thankyou! This made me buy the JCR non silenced exhaust for my GT3!

[@mufflertech]

You got it, thanks for watching!

[@gt3rsgt2rs30]

Very very good wow the sound incredibol the best 👍👍👍 un saund così non lo sentivo se non in pista con le migliori Porsche è una melodia che ti fa sognare bravissimo

[@chrisf1128]

Awesome video 👊🔥

[@ApexGT1]

This is awesome. Thanks!!!

[@351kostakis]

Fantastic

[@padbender2972]

Great comparo...JCR is killing it with Porsche these days

[@mufflertech]

Thank you.

[@coreypatterson1386]

Yes, R1 Motorsports exhaust sounds good too!

[@padbender2972]

@@coreypatterson1386 have to agree with that

[@911aircooled5]

FYI. Sound doubles every 3dB. so 10-15dB open v closed is hugh! Also, SPL's should be measured at 1metre from the source. But a very good review of exhausts on the 992GT3, thanks.

[@mufflertech]

We can try 1 meter next time. I figured we’re doing the measurements from the same distance so the changed results are consistent. It’s about the measured difference’s not the beginning and ending numbers. If your suggestion is more of an industry standard, and it sounds as though it is, I’m happy to do it next time😎

[@911aircooled5]

@@mufflertech Thanks for your reply. Yes 1m is industry standard. You won't need an X on the floor then, and car in the exact same position, 1m is 1m! But if you wanted to go the next level, you'd do it in a sound booth. Bit over the top for this though. Atleast at 1m you can compare all cars that you fit. Still a great job. My 992GT3 arrives in a few weeks so found it useful.

[@PEDROTORRES-zz1eb]

Wow🤩

[@S7860R]

Jcr is just the best by far for aftermarket exhausts for Porsches, in terms of quality and sound they are just unrivalled

[@rdrrua]

ha. check out various topics at rennlist when JCR exhausts were burnt through when taken to a track

[@S7860R]

@@rdrrua I have had 3, most recently on my 992 Gt3 and have used it on track many times .Never had a problem, and they have fantastic customer service If you have an issue which I fortunately haven’t. There are other good brands also. I wouldn’t read too much into rennlist mate it’s full of people with too much time on their hands.

[@rdrrua]

@@S7860R true that - too many topics about the colour of stitching on an order or some special options to go for

[@rdrrua]

@@S7860R my point also was that jcr exhaust for 992 gt3 does not seem to sing high pitch notes as for 991. iPE sounds better to me

[@S7860R]

@@rdrrua Agreed , I like IPE its also up there for me. I think the 991 is better sounding no matter what , 992 also has the GPF . Even the US cars have a dummy GPF, so unless you get around that and change link pipes it’s never gonna compete with 991 sound.

[@fredianocappellaro7406]

GRANDE PORSCHE 👍 🇮🇹 👍 🔝🔝🔝

[@bill9629]

Nice Video, the dark grey has no valves right? did you have to buy the valve deletion kit from JCR? where it goes installed?

[@mufflertech]

Yes, the grey car has no valve’s. The JCR system comes with all the necessary parts to complete the install. The valve deletes mount behind the bumper on the air box mounts.

[@tech2uned]

Enjoyed the video. Porsche realized how much the exhaust is changed with so many possible configurations that they designed the 992 where you don't need to remove the bumper anymore?

[@mufflertech]

We remove one of the header assemblies instead. We’re not afraid to remove the bumper, but the header removal save’s time.

[@Daniel092511]

Great video! Any opinions on JCR vs akrapovic? Thanks!

[@mufflertech]

I’m planning on doing an Akrapovic video as soon as we have the opportunity. The Akra as a slip in would be considerably quieter as it uses a full muffler.

[@nuniday3675]

There is a video of Adam lz gutted the opf material do you think that would throw a check engine light?

[@mufflertech]

It shouldn’t, it isn’t monitored on US cars

[@S7860R]

Hi , can you tell me where to find this video ? Thanks

[@ahmedsamir5380]

Hello, thank you for this video. Did you delete the OPF with JCR exhaust ?

[@mufflertech]

No. This was an “OPF back” system.

[@ahmedsamir5380]

​@@mufflertech Thank you. It sound so good. Do you have in USA the same OPF as Europe ?

[@brianhimmelman420]

@@mufflertechdoes US have same OPF as Europe?

[@mufflertech]

@@brianhimmelman420 I’ve never put my eyes on a Euro example, but I have no reason to believe they would develop a completely different part for us when we don’t even require one.

[@EVsSuck777]

Does the new 992 GT3 have a rev limiter while in park/neutral? I prefer the look and sound of the previous 991.2

[@mufflertech]

Yes, and I agree w you, especially the front end

[@markbauwens8033]

All 911's are tail heavy by definition. How much did the OE stock exhausts weight on the white and dark grey car? How much did the JCR exhaust weight on the white car with valves and the dark grey car without? Less weight improves handling!

[@mufflertech]

Regrettably I didn’t weigh them. I’d guess at least 25-30 pounds less for the JCR.

[@markbauwens8033]

Arguably, the benefit of an alternative muffler, especially in a 911, is less weight, more BHP and your film did not highlight the gains! I don't want to attract attention in my 992 GT3K so more noise is a negative but tolerable for less weight and more BHP.

[@rdrrua]

thanks for this good explainer. have you tried any other exhausts on GT3? I am looking for something high pitched, not bassy. akrapovic comes out very low frequency and bassy exhaust. this jcr is better but still not as good as 991 gt3 sounded with their exhaust IMHO. so far - Valvetronic Designs, iPE, Dundon, Fabspeed - sound more high pitchy to me

[@mufflertech]

Don’t be fooled that the exhaust can change the result of the engine dramatically. You cannot make Madonna sound like James Hetfield with different equalizers or amplifiers. Exhaust systems can have some impact, but not that much.

[@rdrrua]

@@mufflertech I'd disagree - there is such a dramatic difference between some of the exhausts. Just hear this one out kzbin.info/www/bejne/Y3XYeYSHja6SgLc

[@mufflertech]

@@rdrrua that car has 200 cell cats with header’s. That is where the big difference is.

[@bilalhussain7882]

If you put the car in drive and press and hold both paddles on the steering wheel the car with rev to 7000 rpm

[@mufflertech]

Both of these cars are manual.

[@mms8393]

@@mufflertech 👍 The way they should be!

[@brad7425]

I feel like when the car stop, there is pretty big different in sound between stock and JCR (also the same with other exhaust brand), but when the car runs in high rpm, why I feel like stock vs aftermarket brand are the same. If there is a difference, only a bit. This is personal oppinion. Please correct me if I am wrong. Btw I just bought 992 gt3 and consider to upgrade exhaust system.

[@mufflertech]

Sound is subjective, so no opinion is wrong. I would say before making a decision that you should hear them in person. I assure you (at least by my opinion and I do a lot of exhaust) it is louder at every RPM with a higher pitch.

[@brad7425]

@@mufflertech hear them in person is the right thing to do Sir. Yes I believe it must be different in sound. Thank you for your advice.

[@brad7425]

@@mufflertech may I ask your personal opinion, what would you choose for exhaust system for 992 gt3? Akrapovic, JCR or Dundon.

[@mufflertech]

@@brad7425 good question. It depends on your goal. Dundon is the only company offering anything in Inconel, so if you’re after the absolute best material they are a great choice. The Akrapovic is like automotive jewelry, it’s the most finished product we sell hands down, they also use a full muffler, so they’re the most conservative in volume. JCR is probably my choice for a number of different reasons, great sound, amazing support, and relatively quick availability. They’ve also been doing 992 stuff the longest.

[@brad7425]

@@mufflertech thank you for your detailed information. Here in Asia, not many GT3 use these brands, so I have to ask expert or people with more experience through online. I get your point here, they are all have benefit, but for some reasons JCR would be the one. I will put this as a reference👍

[@sylarzzz1]

Can we get rid of the OPF?

[@mufflertech]

Legally no. Depending on where you live an emissions test would fail if they weren’t on the car. In California cars don’t require a smog until they are 5 years old for renewal. Transfer requires a smog test. We just added Dundon Motorsports to our line up and they have a complete system header to tailpipe that deletes the GPF/OPF. See here: www.dundonmotorsports.com/products/street-header-exhaust-power-package-2022-992-gt3-non-eu-version

[@S25117]

What is OPF monitored or non monitored?

[@mufflertech]

OPF are non monitored on North American spec cars

[@S25117]

@@mufflertech ahh okey, so for spain is monitored

[@S25117]

Does the exhaust need software tunning?

[@mufflertech]

@@S25117 no. The change is within the ability for the ECU to make its own adjustment. It’s similar to what happens when you move a car from a high elevation to a lower one, the fuel enrichment adjusts to the available oxygen in the environment.

[@S25117]

Where can i buy this?

[@mufflertech]

We’re a dealer, we can drop ship anywhere

[@Kaiser187]

Why would you put black over titanium tips? That ruins the look so bad.

[@masterg8238]

Your reving a customers car to 9k that has less than 1000 miles on motor?

[@mufflertech]

Lol, the ECU doesn’t allow anything over 6K without being in gear and even if it did we wouldn’t free rev an engine that high on any engine, regardless of mileage. Where did you get the impression we we’re getting that high in revolutions?

[@bobpeake8583]

Not passing sound at Laguna in either configuration 😂

[@JCRDevelopments]

Installing our optional silenced tips on our silenced non valved option will pass at Laguna. Significantly quieter than stock. We have options for all customers :)