Note: EJ20 Motors will require EJ25 Oil Pan and Pickup for installation. 06-07 WRX/STI and 03-08 Forester XT will need to modify OEM oil cooler assembly. Click here for instructions.

INVIDIA BIG TUBE HEADERS

This is the Invidia Equal Length Big Piping Exhaust Manifold. This type of manifold is ideal for those of you looking to surpass large horsepower figures that would otherwise be limited by the flow capacity of the factory exhaust manifold. When shooting for 600+ horsepower, two of the main ingredients that seem to be key factors are a larger piping diameter along with an equal-length design. This, along with smooth bends being used as much as possible within the manifold design, will allow for an unobstructed flow path for the exhaust to exhale the exhaust gases as efficiently as possible for those with even moderate bolt-ons. 

The equal-length design will eliminate the boxer rumble and will create an aggressive 4-cylinder race-inspired sound. These headers will suit stock turbos or any stock-replacement aftermarket turbos with the same inlet flange.

INVIDIA PERFORMANCE

Far more engineering goes in to the design of an exhaust system than many realise. From a performance perspective, there is a fine balance between exhaust back pressure and exhaust gas velocity. Too large a diameter pipe, and low down power and torque is sacrificed (particularly on naturally aspirated cars), too small a diameter or added restrictions and bottle necks in the system, and the engine is unable to push gasses out of the combustion chamber efficiently, reducing power and torque. There are many other technical aspects such as "scavenging effect" which are beyond the scope of this document, but the point is, it's not as simple as just strap on a drain pipe and gains for days. A "quality" exhaust system maximizes performance gains by design.

Invidia High Performance employ a team of engineers and conduct thorough research and development for every single exhaust component they manufacture, ensuring performance to match the customer's needs in every instance, including the use of the highest quality High Flow Catalytic Converters where applicable.

INVIDIA SOUND

What an exhaust sounds like is typically the number one factor when choosing a system. The acoustics of an exhaust system are hugely complex. Many people believe that all an exhaust does is muffle the natural tone of the engine, but in the vast majority of cases this is far from the truth, in fact companies like Ferrari, Lamborghini, Pagani, Porsche and alike all spend massive amounts of time and money "fine tuning" their exhaust systems to sound exactly how they want them to. Put a straight pipe on just about any hypercar and that distinctive engine note is lost.

Tuning the sound of an exhaust system adds an additional layer of complexity to the performance aspect of the design process. The goal is to design a system that sounds great, without adversely affecting performance. Invidia spend countless hours on research and development, including listening to customer feedback in order to fine tune their systems to suit the target market for each model from the quieter Q300 to the Race orientated G5 Titan, so you can be assured your car sounds its absolute best, without sacrificing performance.

INVIDIA CONSTRUCTION

The final piece of the puzzle is perhaps the most important of all. you don't have to be an expert to realise that all the research and development in the world means nothing if the final product is built with sub-standard materials, using sub-standard manufacturing techniques. From the very beginning, Invidia employ state of the art manufacturing techniques to ensure form, fit and finish are all on point.

 First, a 3D scan is take of the underside of the car to ensure fitment is 100% correct.  Next, grade 304 Stainless Steel  (with the exception of their titanium systems of course) is selected for all piping, mufflers and flanges. This particular grade is chosen for its strength, durability (ability to withstand the elements),  and its ability to be formed and welded with relative consistency and ease. Cast flanges are then used which ensures 100% correct fitment every time, no leaks or additional stress points, and long lasting strength.    , an

Finally, robotic welding machines are used to ensure every single weld is uniform and precise, not only adding a huge amount of strength, but also removing manufacturing variances which are unavoidable when doing a task by hand. This means every system that rolls off the production line is just about as identical as possible. All built to the same incredible high standard. Did we mention it also looks absolutely awesome?  

   INVIDIA LIFETIME WARRANTY

Buy with confidence! Invidia Exhausts Australia's LIFETIME WARRANTY applies to this product. Invidia Exhausts Australia warrants all of its products with a limited lifetime warranty policy. Lifetime Warranty covers:

• Structural welds
• Mufflers and internals
• Cracks
• Manufacture defects

Lifetime Warranty does not cover:

• Catalytic Convertors (2 Years warranty)
• Titan G5 Titanium Exhausts (12 months warranty)
• Headers/Exhaust Manifolds (12 months warranty)
• Logo or Invidia Badge falling off
• Scrapes or scrubbing
• Crashes/Vehicle Accidents

Terms and conditions apply - Click For Details