The component most responsible for how your vehicle sounds is the exhaust, and that alone is why it’s one of the most popular performance upgrades. While its primary role is to quieten the engine and reduce harmful emissions, the right upgrades can do the opposite while still maintaining effective filtering.
One exhaust component commonly used to achieve this balance is the muffler. There is a world of difference between stock and aftermarket exhaust systems, let alone mufflers. In stock form, a muffler’s job is to subdue sound. As an aftermarket solution, however, it’s designed to free the engine from its OEM restrictions.
Advantages of a Varex Muffler
Sound
No matter how you look at it, letting your engine work more within its capabilities means letting it sing. With a Varex muffler, you can do exactly that as it helps accentuate the engine note, especially when warmed up. A muffler with Varex patented technology makes the sound coming from your car more satisfying, not just louder.
Options
Because all Varex mufflers are valved, you have full control over how loud your vehicle sounds at any given time. With the press of a button, the valve can open fully or gradually, or close completely to make your car sound stock. Keep in mind that valve position also affects performance in the same way.
Longevity
Made from polished 304 stainless steel, a Varex muffler is built to last, regardless of the conditions you expose it to. As long as it’s protected from heavy impacts, the metal will remain in good condition. If you also avoid prolonged water immersion, the motor will continue to operate reliably for a long time.
Versatility
A Varex muffler can be installed on a wide range of vehicles, as long as you know the exact model and year of manufacture. With this information, you can easily find a muffler that fits your setup.
Installing a Varex Muffler
Preparation
Before installing a Varex muffler, it’s important to prepare both yourself and your vehicle. Lay out all the hardware included in the kit and ensure the exhaust has completely cooled down. Wear safety goggles and gloves, and make sure your vehicle is securely positioned on a lift.
Removal
Start by removing the stock muffler by loosening the bolts and flanges that connect it to the rest of the exhaust system. Once the stock unit is off, you can position the new muffler in the required orientation.
Mounting
Use the supplied hardware to mount the Varex muffler in the same location as the original. Don’t fully tighten it straight away. Instead, test-fit the muffler first to ensure everything lines up correctly, then secure it in place.
Routing
Once the muffler is installed, the next step is routing the wire harness that connects to the motor. Ideally, run the wiring through the spare wheel drain hole. If that’s not possible, you’ll need to locate another suitable opening or drill a new hole.
Control Unit
After passing through the hole, route the wire harness through the interior of the vehicle and connect it to the control unit. The control unit can be placed in the centre console or mounted elsewhere in the cabin. Once positioned, plug it into the 12V socket or cigarette lighter.
Testing
To confirm everything is working correctly, start the vehicle and press the buttons on the remote. Look for green indicator lights on the control unit, and visually check underneath the car to ensure the valve opens and closes as commanded.
When to Replace a Muffler
Noises
A muffler should be replaced if problems arise, and one of the most common signs is excessive engine noise, particularly with a stock system. This often indicates a crack or hole in the muffler.
Smell
A strong exhaust smell, especially when driving with the windows down, can signal a muffler issue. In more severe cases, exhaust fumes may enter the cabin, which can be dangerous and should be addressed immediately.
Rust
Rust is another warning sign. While it may not cause immediate issues, it can eventually lead to cracks or holes. Regular inspections are key to preventing rust from reducing performance or causing your vehicle to exceed legal emission limits.
Fuel Efficiency
Even if you don’t notice increased noise or exhaust smells, a failing muffler can still affect fuel efficiency. A clogged or damaged muffler can disrupt exhaust flow, forcing the engine to work harder and use more fuel.