Whether it’s the increase in top end performance, or the deep rich growl when idling, tuned exhaust systems are at the top of every Aussie car enthusiast’s wish list. OE exhaust systems don’t deliver the healthy stamina or the hearty staccato that aftermarket systems are designed to do, and enthusiasts understandably want more of both.

Top quality tuned systems do more than just look fast and sound good, though. The fact is properly engineered, low restriction exhaust systems are built around reducing exhaust pressure. Going fast and sounding cool are only ancillary benefits. That’s because in Australia high performance exhaust engineering has to be a critical step to reducing unwanted engine wear.

Xforce Exhausts Make Reducing Pressure A Performance Priority

Let’s be honest: while conversations about aftermarket exhausts generally revolve around increasing output, knowledgeable exhaust tuners understand that to truly make a high performance exhaust Australia can embrace, it’s the reduction in exhaust pressure that counts. Australia’s hot, thin air is tough on engines, and it’s especially hard on high performance powerplants.

A tight-winding, deep breathing engine with fewer restrictions on the exhaust-end means less energy needs to be thrown into improving induction on the front-end. The result is a high flowing system that allows the engine to produce more power while also running more efficiently.

Premium quality, high performance exhaust systems rely on a combination of superior engineering, superior workmanship, and heat resistant materials and coatings for their low restriction attributes. Companies like Australia’s Xforce specialise in bringing these attributes together, and their unmatched lineup of aftermarket exhausts are designed specifically to:

• Reduce exhaust restrictions. Xforce performance exhausts utilise optimised tube diameters, mandrel bent curves, and TIG welded joints and flanges to eliminate the impediments that cause wear-inducing resistance.
• Increase exhaust flow. Xforce systems are engineered to promote better high pressure to low pressure exhaust gas flow and evacuation by improving the scavenging capacity throughout the full length of the system.
• Accelerate exhaust velocity. The speeds that spent exhaust gases can move through high performance exhaust systems are critical metrics for low restriction, and Xforce systems excel at quicker, more efficient gas evacuation without swirling or lingering.

Unlike aftermarket systems that depend entirely on oversized pipes to achieve any type of performance advantage, Xforce performance exhaust setups are able to achieve performance gains while satisfying the need to lower exhaust pressure. They even deliver the throaty exhaust note drivers want without exceeding ADR (Australian Design Rule) limits on noise emissions.

A Bevy of Benefits That Go Along With Reducing Exhaust Pressure

Although there’s no question that lowering an engine’s exhaust pressure will extend its life, the accompanying increase in performance is no less impressive. They’re one in the same at Xforce, where a drop in pressure brings a bevy of benefits, that include:

• Better acceleration. Whether it’s dialling in the perfect launch on a holeshot, or getting a heavy trailer moving, Xforce high performance exhaust systems for cars offers a vast improvement in acceleration over factory systems.
• Improved throttle response. Not to be confused with sheer acceleration, the superior flow characteristics of Xforce aftermarket exhaust systems also provide a solid boost in throttle responsiveness for easier merging, passing, or towing.
• Wider torque curve. While an engine’s torque curve is intrinsically tied to it’s design and internals, a high flowing street, or racing exhaust will contribute substantially to widening and smoothing the curve across all RPMs.

Along with their reduced exhaust pressure design, Xforce exhaust systems also have exceptional heat transfer properties. This is a particularly beneficial quality for turbo-charged engines where, in addition to excessive exhaust pressure, uncontrolled heat build-up can lead to premature wastegate failure and catastrophic turbo, or engine damage.

Xforce Makes Exhaust Configurations For Every Application

Xforce understands that no two engines, and ultimately no two exhaust systems, can possibly be the same. This is especially true when it comes to high performance cars, where changes in engine specs within the same model lineups can alter everything from output and torque curves, to engine balance and emission controls. That’s why by concentrating on lowering exhaust pressure, they’ve invariably developed one of the most extensive high performance exhaust system rosters in Australia.

From high-revving 4-cylinder street screamers, to 8-cylinder track-only race exhaust setups, Xforce manufactures a full range of custom, low restriction exhaust systems in 2.5″ – 4.5″ configurations for all types of forced and natural induction engines, and they include:

• Stainless steel single and dual exhaust manifolds, and 3-into-1 and 4-into-1 header pipe setups;
• Stainless steel turbo manifolds and downpipes, with either cat-back or cat-delete secondary pipes;
• Full cat-back and turbo-back setups, with flex pipes, or “X”, “H”, or “Y” centre pipes;
• DPF-back setups with either straight through pipes, or high flow 100 cell cats; and,
• A wide selection of stainless steel and titanium single or dual endpipes, and twin-tipped sidepipes.

And for all but the most high-end competition applications, every Xforce high performance exhaust for sale is designed to use factory mounting points. It’s added assurance that each system can be installed with basic shop tools, and without any special mechanical expertise.

Xforce’s Varex Muffler Is the Essence of Modern Exhaust Tuning

Xforce’s emphasis on reducing exhaust pressure doesn’t end with tube design. They’ve also pioneered their own electronically controlled muffler for maximum flow and noise management, as well as exhaust pressure control. Their patented Varex® mufflers allow drivers to fine tune their exhausts according to the desired level of performance, and offer three-mode functionality.

• Street Mode. In street mode, the Varex’s butterfly valve routes exhaust through unit like an ordinary OE muffler, restricting gas flow and absorbing as much noise as possible.
• In-between Mode. This mode registers only a partially restricted flow of exhaust gas, allowing a modest increase in performance and a more audible exhaust rumble.
• Race Mode. In race mode, the Varex performs like a true race component, effectively allowing spent gases to flow unrestricted through the system, with the sound of a fully open exhaust.

Varex mufflers can also be set up to function either automatically, or independently via remote control or Bluetooth®. Crucially, their functionality firmly establishes Xforce as the most versatile maker of tunable, high performance exhaust Australia has.

The Final Word

At the end of the day, reducing exhaust pressure is really the ultimate goal of any high performance exhaust system. Some are more committed to it than others though, especially when it comes to designing solutions that are built to withstand Australia’s performance-sapping climate. At Xforce, it’s a priority.

No matter the type of car, Xforce makes the high performance exhaust to reduce pressure and engine wear and tear, while simultaneously increasing power. They know the steps to building premium performance.