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Performance Exhaust Systems

Exhaust Systems

Performance: Exhaust SystemsPerformance tuned and high-flow exhaust systems are an easy way to extract horsepower and torque from your modified engine. Increasing bore diameter to “big bore” dimensions also increases exhaust gas flow. This in turn improves the engines’ breathing efficiency – meaning more horsepower and torque. Keep in mind that an exhaust pipe diameter that is too large can reduce power and torque gains – especially on normally aspirated engines.

A recent addition to our exhaust system range is from Remus of Austria. Remus exhaust systems are guaranteed to increase horsepower thanks to clever engineering of the pipe work and rear exhaust box. Remus’ range of exhaust systems covers most European cars, late model Holden and Ford, and some Japanese cars. Call us for your vehicle application and price.


TRR HeadersPerformance: Exhaust SystemsTRR Headers are a tuned length extractor system, and are available to fit many Japanese car applications for normally aspirated and turbocharged cars. TRR also have available turbo headers designed for external wastegate or standard set-ups including Honda turbo conversions. Another popular TRR exhaust upgrade, especially for naturally aspirated cars is the TRR Twin Loop muffler. The Twin Loop muffler is one of the quietest high performance mufflers on the market; the Twin Loop is able to flow as well as a straight through muffler, but without being too loud for the WOF.

Mandrel Bent Full Exhaust Systems are usually only available from expensive manufacturers. We now have mandrel bent systems for many Japanese cars in mild steel and stainless steel manufactured in New Zealand and delivered to your door at less than half the price of comparable systems. The advantage of mandrel bending an exhaust system is that the bends are perfectly formed, which allows excellent exhaust gas flow and reduced turbulence.


Performance: Exhaust SystemsNew to our range of exhaust systems is X Force. Their systems are beautifully manufactured in polished stainless steel using mandrel bends and high strength flanges. Each X Force exhaust system is designed specifically for each vehicle application with power gains as high as 40 horsepower on completely standard cars – more if other modifications have been made. X Force also have a range of stainless steel turbo headers and normally aspirated extractors to suit most Japanese and some Australian cars. All X Force stainless headers are tested tuned length types.

X Force also have a range of stainless steel turbo headers and normally aspirated extractors to suit most Japanese and some Australian cars. All X Force stainless headers are tested tuned length types.


HKS Performance ExhaustsAs officially approved HKS dealers, we are able to supply high-end HKS exhaust systems. These are extremely high performance Japanese made systems, designed to perform to Japan’s very stringent requirements. Both HKS Hi-Power and Silent systems use full stainless steel and mandrel bent pipes. For more details on HKS and their exhaust systems, please click on the HKS page link below.

Trust/GReddy and HKS Exhaust systems are extremely high performance Japanese systems, designed to perform to Japans very stringent requirements. Both Trust/GReddy and HKS Hi-Power use full stainless steel and mandrel bent components. Note: we are also suppliers of SSI stainless exhaust manifolds. If you are looking for serious exhaust system performance, contact us about our range of these systems.


Milltek Sport Exhaust. We are the official importers of Milltek Sport exhaust systems for New Zealand. For Audi, BMW, New Mini, Porsche, Volkswagen and Volvo exhaust systems, please click on the Milltek link page below.

Miltek Exhausts

Please note: product names, logos, brands, and other trademarks featured or referred to within the www.autopassion.co.nz and www.chiptuning.co.nz websites are the property of their respective trademark holders. Autopassion Ltd and Chiptuning NZ are not affiliated with any of the car manufacturing companies listed on this website. They do not sponsor our chiptuning and power upgrade solutions. Autopassion Ltd and Chiptuning NZ are completely independent of all car manufacturers and our power upgrade solutions are engineered autonomously.