
This gives you further freedom to set the optimal sound level according to your desired preference.

For higher sound level, the exhaust flows are directed through the opening path and produces maximum power with a robust sound level (or the “sports car note”) and near-zero resistance. A sophisticated butterfly valve mechanism is implemented to redirect the exhaust gas flow and vary be-tween the two. XForce Stainless Steel 3 Cat-Back Exhaust System With Varex Muffler fits MK7/7. Optional VAREX™ Muffler - VAREX™ mufflers utilizes the patented technology to combine both the design technology of the stock muffler and the performance muffler into one single compact unit. They are built to perform well, with materials designed for longevity and like all XForce exhaust systems they look great! These exhaust systems bolt directly to existing mounting points making installation easy. XForce offers a range of uniquely engineered and designed stainless steel bolt on exhaust systems. VW GTI Mk7/Mk7.5 3" Cat-Back Exhaust System by XForce

Personally I'd keep it on the button as I'd only use it for passing cops as I love the sound of loud grunty exhaust. It will automatically open at a certain RPM and close at a certain rpm giving it essentially the same kind of exhaust like the HSV, Lamborghinis and Corvettes. That way you dont need to keep pressing a button. You can actually set them up now to go off RPM like the HSV Bi-modul exhaust. Obviously just cruising around under partial throttle won't be a problem.
XFORCE VAREX MUFFLER FREE
After all the car thinks the exhaust is free of restriction then you are adding a significant one.

Fabricated entirely from stainless steel and offered at competitive prices and with a guarantee that you’ll always get the best, you can trust. Varex Smart Box is a control device with patent-pending technology that lets the user to manually and automatically adjust the exhaust sound level of the Varex. From XForce Varex, XForce Exhaust Tips to bolt-on solutions tailored for individual makes and models to custom adjustable solutions and weldable universal systems, there’s a product for everyone.
XFORCE VAREX MUFFLER UPGRADE
First of all if you are is tuned for a free flowing exhaust espicially if you have forced induction putting the can under power whilst closed will put damaging pack pressure on the motor. Universal Varex Smartbox Muffler ECU Upgrade Module by XFORCE Exhaust. However there are many things to consider. Varex performance mufflers utilize a sophisticated internal electronic butterfly valve mechanism to direct the exhaust flow within the muffler.

Their claims are very true you get close to stock level volumes.
XFORCE VAREX MUFFLER INSTALL
Varex is a brilliant muffler to install if you want the option for a quiet cruise or for flying stealth past cops.
