Porsche 928 Exhaust Upgrades

Borla T-304 stainless steel performance Cat-Back exhaust systems for the 1978 Porsche 928 4.5L V8 offer increased engine horsepower and torque throughout its RPM range. Built to perform, these high quality systems are built to last.

The headers converge into a mid-pipe (also referred to as Y or X pipe). From there, it runs directly into the rear muffler for exhaust.

Cat-Back

Cat-back exhaust systems are one of the most sought-after upgrades for 928 enthusiasts, as it consists of an entire exhaust system which replaces headers, cats, midpipe, mufflers and exhaust tips with performance grade models that reduce noise while at the same time increasing horsepower and torque. A cat-back system typically comprises stainless steel or aluminized steel components and typically feature noise-reducing resonators or mufflers while performance grade mufflers help increase power by decreasing back pressure and increasing horsepower or torque.

A cat-back exhaust system starts with two tubular headers that are larger than stock exhaust manifolds and allow each cylinder to scavenge exhaust gasses more efficiently. Once connected, these headers merge into either a mid-pipe, Y-pipe, or X-pipe depending on the year of car; from there it converges into several series of mufflers which reduce sound levels, before finally terminating with a catalytic converter which is required on all vehicles except Canadian versions of 928s.

These premium aftermarket systems utilize larger diameter pipes than those installed factory, for free-flowing exhaust gases and to increase horsepower, torque and fuel economy. Furthermore, there is an assortment of muffler types such as glasspacks or straight-through systems so you can select your perfect option based on personal preference.

Upgrades such as this one are great ways for those looking to enhance the performance and sound quality of their vehicles without breaking the bank. They typically cost less than full systems but still result in noticeable enhancements of vehicle performance and sound quality.

Many drivers find that upgrading their exhaust system can make their driving experience more pleasurable and satisfying. After all, this system is responsible for carrying away emissions from their vehicle into the atmosphere – thus it must function smoothly if driving a classic like Porsche 928 that relies on it for transportation purposes.

Rear Muffler Bypass

An exhaust system in a Porsche 928 is of vital importance as it transports exhaust gases to the atmosphere. Comprised of various parts like headers, catalytic converters, and the rear muffler; its function ensures proper functioning for both engine performance and sound quality. Modifying its exhaust system to improve either or both aspects is possible to add customization options that enhance its overall performance or sound.

Rear Muffler Bypassing your 928 is an effective and cost-effective way to add power and sportiness, without breaking the bank. DIY enthusiasts can easily perform this modification at home; its installation requires no welding for ease and will give the car an improved exhaust note compared to its stock muffler.

An effective way to enhance the performance of a Porsche 928 is to upgrade its exhaust headers. Doing this will release up power lost due to factory back boxes being too restrictive, with manufacturers such as Supersprint, Remus, Miltek, and Designtek offering sportier exhaust systems constructed using high-grade materials like titanium and stainless steel that extract maximum horsepower without droning in the cabin.

Other modifications you can make to a Porsche 928 include installing high-flow cat sections to clean emissions while increasing flow, increasing horsepower. Another popular modification involves installing a muffler by pass which removes two side mufflers in the exhaust system to increase horsepower further while improving sound.

X-Pipe

Factory Y-pipes do a good job at getting exhaust out, but provide little else in terms of sound or power enhancement. For those wanting something with more horsepower and sound potential, an X-pipe may be the solution; its unique crossover point allows the gases to merge at an audible crossover point to produce a raspy race car-inspired growl that’s hard to ignore – plus these pipes will increase horsepower and torque production in higher RPM ranges of the engine.

Exhaust sound tuning is an art that takes many hours of precision tuning to achieve optimal results. Achieving optimal sonic balance requires finding a balance between optimizing the sound spectrum while meeting legal noise limits and satisfying the EPA requirements, and satisfying performance expectations from your Porsche. Furthermore, many components contribute to its final sound and power output.

BORLA is one of the world’s premier exhaust manufacturers and fully understand this business. They dedicate extensive time and energy optimising their systems using cutting-edge technology for maximum flow and power while producing an exciting sound signature to delight drivers.

They use patented straight-through and multi-core technology to unlock hidden horsepower, creating an exhaust sound admired by motoring enthusiasts everywhere. Each system is handcrafted by dedicated Porsche fanatics with one goal in mind: extract every last drop of performance. Their systems boast dual welds at joints for increased durability and every tube polished even on its inner surface – giving the resultant exhaust systems their trademark sound!

The X-Pipe was initially created by Louis Ott and later refined by Dave Lomas at Motorsports SLC, through extensive trial-and-error and dyno testing. Now it has become the go-to upgrade for your 928; increasing power by at least 25 RWHP depending on engine setup, ambient temperature, ambient pressure levels, drone reduction concerns, or simply wanting to hear their full power potential of their car! Each kit includes gaskets, bolts, nuts and clamps needed for installation.

Headers

The exhaust system of a vehicle is an integral component in its performance. This channel transports engine’s exhaust gasses away from the atmosphere, consisting of various parts such as catalytic converter, exhaust manifold, and muffler. To maximize performance it may be beneficial to upgrade this system through components like headers.

Headers are one of the best performing bolt-on exhaust components available today. Easy to install and providing significant horsepower increases, they help eliminate back pressure caused by exhaust manifolds. An exhaust manifold collects exhaust gasses from all cylinders at one time before dispensing them through short inlets to each cylinder whereas with headers individual tubes are spaced apart so each cylinder’s exhaust enters at its own individual time allowing less backpressure and accelerating flow rates of exhaust gasses into collector.

Exhaust headers come in different lengths to meet specific performance goals; some are optimized for low-end torque while others work best at midrange levels. Furthermore, primary tube length can have an effect on gasses’ scavenging efficiency as well as weight, price, and noise impact of your headers.

When coupled with a muffler, headers can provide an impressive V8-esque exhaust note; however, they do not provide as significant of a performance increase as other exhaust systems mentioned here.

A header-back exhaust system consists of headers and a rear muffler bypass system, replacing the factory rear muffler, which is restrictive and heavy, with one that is lightweight yet free-flowing – enabling your engine to produce more horsepower while increasing torque production – for an affordable performance boost on your Porsche 928. It’s an efficient, simple way to improve its performance!