Get the Most of Your BMW M3 with XForce’s Exhaust Systems

It’s not hard to understand why whenever auto enthusiasts think about modern-day high performance, they think about BMW’s M3. For more than 40 years, M3s have been the standard that all other mid-sized luxury sports sedans are measured against, and the reasons couldn’t be clearer. They’re fast, power machines that concede nothing on comfort, which is why aftermarket manufacturers can’t get enough of them.

Exhaust systems are hands down one of the first aftermarket upgrades that M3 owners make to their vehicle. The power and performance that were primed to be unleashed by a low restriction M3 exhaust, especially behind ECU chip tuning, is astonishing. And the interesting reality is, with only a change of tyres, a properly upgraded M3 is one of the few cars that can go straight from Albert Park to downtown Melbourne without raising a single eyebrow.

XForce Exhaust Systems Deliver Uncompromised BMW M3 Performance

Let’s be honest: when it comes to uncorking an engine’s potential, nothing makes a bigger difference than a low restriction exhaust system. 5th and 6th generation M3s are no different, which is why free-flowing F80 and G80 BMW M3 exhausts are among the most popular aftermarket upgrades available for these intimidatingly fast machines. 

Not just any big-tubed exhaust system can give these machines the breathing room they need, though. The M-Series’ fast spooling mono-scroll turbos require an exhaust system that can move spent gases quickly at low RPMs in order to reach their legendary full boost almost instantaneously. This is where XForce 3.0″ catback exhaust systems come into their own.

With more than 25 years in the performance exhaust industry, XForce leaves nothing to chance with any of their BMW M3 performance exhaust systems. They understand that the key to BMW’s high-strung straight-6’s performance is being able to get rid of used gases fast and keep them out. That’s why their dyno-tuned and balanced BMW M3 performance exhausts are industry leaders when it comes to:

• Increasing engine output. All XForce BMW M3 exhaust systems are dyno tested and tuned to deliver the optimised airflow and scavenging that the big straight-6 requires. The result is an exhaust system that matches the engine’s power curve perfectly to bring in more power, sooner.
• Improving engine responsiveness. As an increase in scavenging ultimately allows the turbos to spool up faster and produce more power quicker, XForce M3 aftermarket exhaust systems are the perfect solution for improving engine responsiveness and acceleration at all RPMs.
• Reducing exhaust weight. With the M3’s factory catback system weighing as much as 40kg, weight savings are always appreciated. XForce BMW M3 exhaust systems, however, are manufactured from lightweight corrosion-resistant alloys, allowing them to strip as much as 20kg from the M3’s curbweight while also enjoying a longer lifespan.

Ideally, with BMW’s big S55 and S58 twin-turbo powerplants capable of producing 352kW – 410kW, XForce BMW M3 aftermarket exhaust systems are designed to let them put more of their tyre-shredding power to the ground. And M3 owners only have to look at an XForce craftsmanship to know that there’s no compromise on quality to achieve performance.

Basic Exhaust Configurations That Focus On Airflow Fundamentals

From their highly polished and mandrel-bent tubing, to their TIG-welded joints and flanges, XForce M3 performance exhaust systems combine minimal airflow restrictions with optimal scavenging and velocity rates to create a package that’s unrivalled among street legal aftermarket exhausts. And with their 7000+ RPM redlines and ability to run higher turbo boost pressures (especially on the lower compression S58), both M3 straight-6s are effortlessly capable of seeing a 10kW – 20kW increase in output with no other modification than an XForce upgrade.

XForce systems also don’t rely on complex X- or H-pipe arrangements, hybrid resonator assemblies or exotic alloys. They’re built entirely around the basics of sound flow dynamics and efficient component configurations that include:

• A choice of either dual 2.50″ or 2.75″ OE inlets to dual 3.0″ 304 stainless steel straight tubes;
• A choice of either dual resonators, or optional resonator deletes; and,
• Optional 2.50″ centre-section tubing for further assist with scavenging.

These are XForce’s core ADR-compliant BMW M3 performance exhaust system components, and are direct replacements for all 5th and 6th generation M3 RWD and AWD/xDrive factory exhausts. And because they’re backed by XForce’s leading edge valved muffler technology, they’re also firmly positioned among Australia’s most innovative exhaust systems when it comes to controlling noise emissions.

Varex Mufflers Provide Optimal Noise Control Without Excess Back Pressure

Xforce understands that when it comes to muffler design, balancing efficient noise emission controls while still giving car owners a rich, throaty exhaust note is no cakewalk. There’s a third component of muffler design that also has to be considered: reliability. 

A muffler that’s overly restrictive increases the likelihood of excessive back pressure suffocating the engine, which also dramatically increases the risk of turbocharger thrust bearing failure and destructive heat buildup damaging the entire system. That’s why every XForce-supplied BMW M3 exhaust system is equipped with one of their patented remote controllable dual valve Varex mufflers.

The Varex is an electronically controlled, butterfly-valve equipped muffler that allows drivers to regulate both noise emissions and the amount of inline back pressure via Bluetooth, key fob or directly from the BMW’s dashboard. Once connected to the M3’s OBD2 port, the Varex’s independently-mounted Smartbox Controller gives the driver a powerful range of muffler settings that include:

• A choice of FULLY CLOSED, 25%, 50%, 75%, or FULLY OPEN valve positions;
• The option to open or close the muffler’s valves based on engine RPM, throttle position or speed; and,
• The option to open or close the muffler’s valves based on the BMW’s exact street or highway location.

Whether it’s the amount of noise generated or the amount of back pressure created, Varex mufflers give M3 owners total control to fine tune their exhaust system’s performance. That makes them the perfect sound absorption and interruption devices for use as an OE replacement.

The Final Word

Whether it’s their speed, power or compact comfort, there’s no denying that BMW M3s are in a class all their own. Yet as impressive as their 3.0L S55 and S58 straight-6s are, it’s obvious that they could use an exhaust upgrade as a way to put more of their massive twin-turbo power to the ground.

XForce’s premium F80 and G80 BMW M3 exhausts, complete with Varex mufflers are the right choice for getting the power where it needs to be. They’re an investment in aftermarket engineering whose high performance benefits are impossible to ignore.