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CAN integration for Hush-O-Matic exhaust

This is your control stick!
CAN integration for Hush-O-Matic exhaust
Control your active exhaust using the controls of your car!

Made in the USA

Exclusive to Flyin' Miata

Availability: On backorder
You can place an order now and we'll reserve it for you. We are expecting the parts around June 26th, 2020.



As if having an active exhaust wasn't cool enough, this unit lets you integrate it into the car's electronics as if Mazda put it there.

The standard Hush-O-Matic works pneumatically, opening and closing the bypass depending on engine vacuum. Sometimes, however, you may want to keep it closed all the time for stealth mode - or open it up full-time for maximum aural fun. This integration kit allows you to change the bypass behavior on the fly.

To control the bypass, simply twist the control ring for the automatic wipers.  Set it to maximum (+) and your bypass will be open all the time - ie, always loud mode. Set it to minimum (-) and it'll go into always quiet mode. The three settings in between change how soon the bypass opens. You can have it go loud at 90% throttle, at 60% throttle or 20% throttle. When you turn on the wipers due to rain, the system will ignore any changes in settings.

How does it work? The MRS Micro PLC reads the status of the wiper control stalk and the throttle pedal, and uses a solenoid to open and close the butterfly. All of the components are built to OEM specifications and durability requirements, so it'll keep functioning for years. Wiring is minimal, requiring tapping into only four wires. The digital control of the bypass also eliminates any chance of buzzing as the bypass moves between positions, which can happen with analog control.

Can be retrofitted to any Hush-O-Matic exhaust. Contains the MRS Micro PLC, a plug-in connector for the PLC, control solenoid and all wiring/hose to install.


Additional Information

Additional Information

Part number 06-49195
Fits: 2016 MX-5 soft top, 2017 MX-5 soft top, 2017 MX-5 RF, 2018 MX-5 soft top, 2018 MX-5 RF, 2019 MX-5 soft top, 2019 MX-5 RF, 2020 MX-5 soft top, 2020 MX-5 RF
Manufacturer Flyin' Miata
Flyin' Miata exclusive Yes
Fits Exocet? No
Proposition 65 Warning: Cancer and reproductive harm
California emissions Emissions regulations do not apply

Customer Reviews 3 item(s)

OEM quality
Superb integration with the Hush-O-Matic exhaust. At first I only mounted the exhaust, drove a few weeks with it. The active exhaust works OK, but with a little bit of gas it gets loud the moment I don’t want it to be loud. Therefore I mounted the Can controller. Unbelievable, it really is like an OEM part. Great job done, Flyin Miata!
Review by Bruno / (Posted on 11/10/2019)
The brains of the Hush-O-Matic
I bought this along with the mid-pipe for my Hush-O-Matic exhaust. The instructions were easy to follow and the parts are of the highest quality. This pre-programmed relay listens for throttle position and intermittent wiper switch position on the CAN buss, and opens up the bypass valve on the exhaust accordingly. The Hush-O-Matic either routes the exhaust through the FM muffler (subtle sporty tone), or it routes the exhaust straight out the tailpipe (intoxicating, but not brash or garish). This little marvel of engineering decides if that bypass valve should be opened or closed. Highly recommend if you are purchasing the Hush-O-Matic.
Review by Jeremy / (Posted on 8/27/2019)
Highly Recommend
This is a must have if you have the Hush O Matic, I have been very happy to be able to adjust the tone / volume.
Review by b-mendenhall / (Posted on 8/26/2019)
Click here for instructions for this part.