Extremely easy to install, took less than 5 minutes for both sides. Controller has worked according to description so far! Very quick shipping also.

Very good customer service

Simple to install.
Programming the buttons was easy.

Simply excellent, thanks 11

Very simple device executed brilliantly. Well made, very easy to fit (took five mins per side) and very effective. Really adds to the enjoyment of the car pootling around at slow speeds in particular. Recommended.

I added this to my Audi V8 TT. I was seeking that little bit more without ruining the overall luxury that is the car. It’s great having the that beautiful cold start gurgle at the push of a button. Under load is where you appreciate this shuttle change. This install took me 5 mins even though Audi made it difficult one said to get to. For the price I’m extremely happy and as I said the customer service that is missing in most businesses today is not with 11 mode. I thank and appreciate their quick response and back and forth communication.

Works great, holds valves open when desired.

If you are on the fence about 11mode, just buy it already! Love having the power to open the valves anytime I want, and let my baby scream!

Great packaging and impressive quality item. Simple to install and worked like a charm all as advertised. FYI no need to lift the vehicle. THUMBS UP!

Very fiddly to install but perseverance paid off and now very happy with the sound I'm now getting from the exhaust.

I’m very happy with this product. Installation was easy, and the price is quite reasonable. I especially like the compact size of the remote—it doesn’t take up much space in the car, which makes it very convenient.

In terms of functionality, it addresses areas where I previously felt my RS3 was lacking, so I’m very satisfied. I’m using it with the stock exhaust, so while there’s no dramatic change in volume, I actually prefer that. It allows me to use the car for everyday driving or even bring it to the dealership without any issues.

Since I’ve only just started using it, I can’t comment on durability yet, but I have high hopes.

As the title says, it's easy to install. Took all of five minutes to install both controllers. Love the sound now. The only issue I have is that it resets to closed mode after the car shuts down. Not sure if there's a workaround to that but understandable that it reverts to "normal" after shutting down.
On my Audi you can program your garage door opener with your remote to open and close the valves.
Overall a great product without having to tap into wires and is completely reversible.

This literally takes less than a minute to install without any tools required. So far this module works great for opening my valves on demand, and I notice a big difference in my MPE, especially in Comfort mode.

After other positive feedback from M2 G87 forums on the 11Mode exhaust valve controller, I decided to order one. It came from Australia to the UK in less than a week and was very easy to fit. I have had it on the car for over 2 weeks and it has worked perfectly every time I have used the supplied remote control to open and close the exhaust valves. It makes the car sound much better and gives you the option of letting the car control the exhaust flaps in its stock format or switching them fully open for maximum sound. I would highly recommend this product.

I've had the 11-mode exhaust mod for two weeks, and it works as expected. It's a time-saver for those who want regular mode performance with a Sport+ sound. If you're not a mechanic or handyman, this is the easiest DIY mod, taking just 25 minutes to install.