We’ve had a few requests for this feature, and have looked into offering it to our customers.

There are many ways to achieve this in the calibration, and different methodologies of fueling, ignition timing, and exhaust camshaft position can be altered to modify the circumstances and characteristics.

It’s important to ensure that this feature is safe for use over time. In essence, a loud pop promoted by changes in the calibration is an intentional misfire. Vehicles that have this feature in factory form have provisions and functions built into the operating code to achieve this result. For example, on vehicles with this feature built in, selective controls for activation and deactivation of fuel injection and ignition timing per cylinder are employed by the digital motor electronics unit. They go as far as to alter the strategy to account for position and stroke cycle at that moment. It’s a “controlled” misfire in essence. The MSS60 control unit doesn’t have such provisions.

Additionally, this has the possibility of reducing fuel consumption and increases emissions, with the potential of fouling oxygen sensors over extended periods. The strategy employed to achieve this sound can mitigate these effects to an extent. Another thing to keep in mind is the highly adaptive nature of this control unit. It’s important to ensure that these changes will not cause unfavorable adaptations due to oxygen sensor data fed back to the control unit. Excessive exhaust gas temperatures can decrease the life of catalytic converters.

This is geared more toward catless vehicles but can be achieved on vehicles with aftermarket exhaust systems (preferably with the cat located further downstream from the header outlet).

That said, this is something we will offer to those that request it, but not until it’s put though a series of tests ensuring that the positive characteristics outweigh any potential negative consequences. We’ll post more videos, illustrating different types of sounds that can be made as this is tested. Most of the other projects we are working on are higher priority, please forgive any slow updates!