Porsche 992 Exhaust Valve Mod Kit

Easy to fit, fully reversible, opens your exhaust valve permanently so you can enjoy the sound of your car!

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992noise

The Kit

It's not complicated; it's just some wires. But it packs a punch!.

Easy To Fit

No specialist tools required.

Reversible

Remove in a few minutes without trace.

Make some noise!

More volume, more crackle, more fun!

No ECU Changes

Unplug an existing connector, plug in the kit and you're good to go.

Hand made

Made to order in the UK and shipped worldwide.

Tested

Autobahn, sun, rain, high temp, daily drives - all tested.

Testimonials

Shipped to US, UK and Europe, 992 owners have been kind enough to share their feedback after fitment.

Just installed the kit. It was dead simple.

.. just gave it some idle revs and it sounds great!

Definitely a more aggressive sound without being too loud.

Absolutely luved it :))

Very reasonable levels at start up revs before dropping down , then a lovely deep tone at tick over

Motorway driving absolutely fine , around town again absolutely fine.

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Compatible with all 992 models using the 2,981 cc or 3,745 cc turbo flat six engine.

NOT compatible with the non-turbo 3,996 cc engine - GT & S/T models.

Frequently Asked Questions

If they really are frequently asked, I put them here, alongside the other questions I think you might have ..

  • Isn't this just the same as pressing the PSE button on the dash?

    No - the PSE system includes an exhaust flap which is typically closed even when the PSE button is pressed. Your car chooses whether to open the flap (and make more noise) depending on a bunch of parameters. At full throttle, high revs, etc. the flap is open. At idle, it's virtually closed. Driving around town, it's closed. This mod ensures that it's open permanently.

  • At high revs/full throttle, the sound is identical as, with or without this kit, the valve is open. The biggest difference is at idle and slower speeds around town - the car is throatier and there are more pops and bangs (even when in non-sport mode). However, on a trailing/closed throttle, the car remains very quiet.

  • Some cars use a vacuum pipe to control exhaust valves, the 992 controls them electronically - this mod ensures that the valve can stay open without causing errors on the dashboard. The 992 controls the exhaust sound at different rev levels, engine loads and modes by opening and closing a flap in the exhaust. This mod keeps the flap open permanently.

  • The configuration, flap setup and wiring is identical between PSE and non-PSE exhausts so you will also see a change in the sound of the vehicle with this modification.

  • The mod consists of a pair of connectors that are plugged in to your vehicle; to reverse the change they simply need to be unplugged. There is no change to your ECU and no need to rewire any existing wiring. Once removed, the vehicle is identical to how it left the factory.

  • Yes, click the link for the installation guide below. The main challenge is locating the existing connectors to unplug which are under the rear bumper, just near the exhaust tailpipes. Once located, it is a one-handed job to unplug them.

    Installation Guide

  • I've worked out the raw costs of the materials and the time to assemble the kit. Then, guessing how many i'll sell, i've added on a little to cover my R&D costs and, frankly, to make it worthwhile! The kit is being sold at a discount initially to gather feedback on 992 variants I haven't specifically tested on. The first edition was cheaper but, since then, 2 things have happened - (1) i've had to swap to another supplier who is charging a few $ more, and (2) I worked out all my true costs and realised how tight my margins were! I don't want it to be too expensive but I did spot a similar kit for another vehicle which was over $120!

  • Good question. The alternatives are to purchase and fit a new exhaust and/or free flow catalysts (the thick end of £3000 at least), a ECU re-map (£1000+) or a valve controller (£600-700). Given the simplicity of this solution I thought it was reasonable to price at the lower end - and simply because i'd rather sell 1000 than 10!

  • As with many products, they aren't rocket science. You just need some time, patience, money and a few tools which might cost you a lot more than one kit. I won't share what i've invested already but i'm telling myself that the tools will be useful for other stuff ;-)

  • Just a 992 owner a bit grumpy that his 'sports' exhaust was only sporty occasionally and who didn't want to modify his ECU or spend thousands on a new exhaust. With some investment in tools, some time taken for R&D, plenty of mistakes and some patience, I developed a reliable way to keep the exhaust flap open and release some more sound!

  • I don't have access to all the 992 variants and combinations of configurations so it's possible it won't work for your car. In this case, i'll refund you. This isn't my day job, so there's no reason for me to try and fleece you out of a few quid! I'll ask for the kit to be sent back and i'll refund you for the cost of the kit plus the standard postage/packaging you paid when you bought it. You'll be out of pocket only for the original cost of the postage. Note that if the kit is working but you're not happy with the change in sound, I can't refund this. It's a cheap kit, it's working. If you don't like it, remove it!

  • All the kits are being hand-made to order. Each kit is checked and packaged by hand. As a result, turnaround is not immediate but I aim to dispatch within a few working days of order.

  • Check with me first if you aren't in the US, Europe or India. Shipping to the US seems to work well even though there seems to be a customs hold (missing docs) for a day no matter what docs I include! India is the most painful so far - shipping is nearly 2x the cost to the US and there may be an additional clearance fee to pay locally. UK and Europe no problems.

News

16th May

Yesterday I got notification from PayPal that, as i'd reached a particular limit, they would possibly be restricting my ability to withdraw funds - eek! I really need funds to be available so I can purchase from my suppliers .. On top of this, I had a couple of customers recently selecting the wrong options from the Paypal button as it was a little confusing regarding shipping - I had to refund and ask them to re-order (a pain for both of us). I'd also had a bit of an uncomfortable moment when shipping to India for the first time I realised that my standard 'international' fee wouldn't cover it!

So today i've decided to 'upgrade' to a paid ECWID account which does a bit more order and customer management for me. Please bear with me as i've been using PayPal and Packlink relatively happily for the past couple of months and this will be a change! However, good news:

  • You can now choose whatever UPS shipment service you want, and it'll adjust pricing and ETA accordingly. Spend a little, or spend a lot - your choice.
  • You can use Apple Pay and Google Pay if you want! Nice and easy.
  • The order process asks which version of 992 you have, and which exhaust. It might help troubleshoot any issues.
  • You get more automated email updates as I make the kit, package and ship it.

The bad news is that i've had to hike the price a little. However, I think it still fits into the 'reasonably priced' category, especially when compared to an exhaust or other options.

13th May

Wow .. sales have really taken off recently! The graph is 'orders' in the first 2 months. Am managing to keep up with demand .. just .. but the R&D on the new switchable option has suffered a bit. I did manage to make up a prototype kit and get it fitted to the car but there are still some final bits to sort out - it's working as a wifi hotspot and the switch works quite well on one side, but not both yet. Need to do some more wiring. The box I am testing with doesn't fit so well in the engine bay so I may change things around a bit, also need to create an app to allow bluetooth comms to the unit, rather than WiFi. It all adds to the R&D time for this one but am going as fast as I can!

6th May

The orders are still steadily coming in - many thanks to all new customers, and for the positive feedback! It's fantastic to hear; please do let me know your thoughts - good or bad! A lot more orders from the USA recently - FYI shipping seems to take around 7 days at the moment, regardless of east/west coast.

I took the time to take a few more fitting videos - i've also invested in a microphone for my DSLR so when the UK weather stops thinking that it's winter, i'll head out and do some drive-by videos where the audio is a bit clearer.

A few folk asking about the switchable option - it is still being worked on, but I do recognise that there is demand! The main challenge is that we're moving from a very simple and small wiring connector to a more 'dynamic' component with some 'moving parts' so to speak. Nothing actually moves, of course, but there is likely to be longer wiring trails and there will be an active chip that manages the switching. I want to make sure it's reasonably priced and also easy to install so I think it'll be a couple of months before I can offer anything for sale, but i'll update the website as/when I have a prototype up and running.

26th April

A steady stream of orders over the last 10 days or so, generally from the UK. Interesting to read on a forum that someone thought this was a scam because the site seemed only to ask for shippping costs. I quickly amended it to show 'Kit+Shipping' !!

If you're in any doubt, please feel free to email me on the link below but I can assure you the kit is 100% real, works just fine and, in my view, is really how PSE should sound whenever switched on!

16th April

Another order rolled in today .. just after i'd finished refreshing the website! I also spotted a quote in a forum from another 992 aftermarked supplier who can also open up the exhaust valves .. as part of their tuning product. The quote that caught my eye was:

It is also good for about 10 to 12whp just by forcing valves open.

Just to confirm - I haven't dyno tested my car but it does make some sense. A turbo is a big restriction in the exhaust - and the greater the difference in pressure upstream (between the turbo and the exhaust valves) compared to pressure downstream (your catalytic converters, muffler and exhaust valves) suggests the turbo will spin up faster and, perhaps in theory, would deliver boost earlier. Whether this results in ultimately more power overall, i'm not sure. But it might sound faster ;-)

15th April

Purchasers of the 'first edition' kits have fitted and reported success. Hope i'm not putting words into their mouths but I think everyone is very happy with the kit. Many thanks for those who sent pictures and feedback after the install - it was really nice to see!

FYI I'm working on some new versions of the kit - let me know if either are of interest:

  • Remote control ON/OFF version. Use your phone to enable/disable the valve.
  • Wider 992 customisation tool - exhaust flap control, spoiler control, PASM control, cold start control, etc.

Still in R&D phase but there are lots of options on the 992 which may be configurable and customisable. I would like to get these available via CarPlay and/or using iOS shortcuts which you can set up and configure yourself. Note that this is NOT a modification to your ECU, but is more like adding another module to your vehicle. I want the whole thing to be easy to add and remove so there is no trace.

26th March

Just under a week after launching the site, the first install (a GTS) has happened! And two more orders in the pipeline - one for west coast USA, the other west coast UK! Am working on more pictures and a video for the installation instructions - watch this space!