Why Choose Borla?

BORLA is committed to providing world-class exhaust products which surpass the expectations of their customers. They have pioneered a variety of improvements in the design of performance exhaust systems. Every Borla Muffler is made from 304 stainless steel (superior to 409 or aluminized steel). They also fully weld their mufflers just like we do our exhaust systems. BORLA’s patented exhaust technology for the street can provide up to 7-10% increased horsepower and torque when you plant your foot, and improved gas mileage at cruising speeds. These mufflers also qualify for our 2 year parts and labor warranty

What Borla Products Do We Keep In Stock?

Turbo Series

BORLA XL Mufflers are designed for supreme street performance, offering aircraft-quality high quality austenitic stainless steel, all-welded construction and more for increased horsepower and torque. Independent tests prove maximum flow capability.

XL models are recommended for smaller engines. XL models for smaller, 4-6 cylinder motors.

Turbo XL Series

BORLA Turbo XL Mufflers are designed for supreme street performance, offering aircraft-quality high quality austenitic stainless steel, all-welded construction and more for increased horsepower and torque. Independent tests prove maximum flow capability.

Turbo XL models are recommended for larger engines. Turbo models for smaller motors up to small-block V8s.

Lou's Now is making our own custom 4" cat-back diesel exhaust kits.   

We are using 4", 14 guage, mandrel bent exhaust pipes along with a straight through magnaflow muffler and a 5" or 6" stainless steel tip.

The system is 100% welded and costs $475.00 to install.

Performance exhaust and better gas mileage

You've probably wanted a sweet set of exhaust pipes for a while. Now here's a great excuse to grab a performance exhaust: High flowing performance exhausts actually increase gas mileage!

The specialized bending of an exhaust system and a higher flowing muffler frees your exhaust flow, virtually ending turbulent back pressure that can hold your vehicle much the way drag does. The average improvement to gas mileage is between 1 and 2 mpg, which varies by vehicle.

Along with the gas savings, a performance exhaust system for your vehicle boosts horsepower between 5% and 10%. Using this new power to drive like a bat out of Hades, though, will negate any gas mileage increase provided by a performance exhaust.

Don't forget the sound! Adding a new exhaust system to your vehicle can add any level of engine growl - from sporty and subdued to a rumblin' rock concert nobody is soon to forget.

So give us a shout at Lou's Custom Exhaust of:
Quincy (617-773-6500)
Plymouth (508-746-3500)
Westport (508-646-1500)

If you prefer you can contact us via email .

The exhaust manifold is the component of an exhaust system which connects the exhaust ports on the engine block to the downpipe. Some problems you may have with a manifold are cracks, warping, broken studs and bad gaskets. Unfortunately most of these problems require a replacement of the manifold.

Exhaust manifolds are generally simple cast iron or stainless steel units which collect engine exhaust from multiple cylinders and deliver it to the exhaust pipe. For many engines, after market high performance exhaust headers are available. These consist of individual exhaust headpipes for each cylinder, which then usually converge into one tube called a collector. Headers that do not have collectors are called zoomie headers, and are used exclusively on race cars.

The most common types of aftermarket headers are made of either ceramic, or stainless steel. Ceramic headers are lighter in weight than stainless steel, however, under extreme temperatures they can crack - something stainless steel is not prone to.

The goal of performance exhaust headers is mainly to decrease flow resistance (back pressure), and to increase the volumetric efficiency of an engine, resulting in a gain in power output. The processes occurring can be explained by the gas laws.

There are certain vehicles that are prone to developing manifold leaks. Also, due to many different types and configurations of motors in modern vehicles, the degree of difficulty in replacing an exhaust manifold can vary greatly. Unfortunately, this also means the cost of such a job can vary greatly too. Some vehicles exhaust manifolds many even have a catalytic converter integrated into it. This setup can significantly increase the cost also.

FLEX PIPES ARE A COMPONENT OF MANY MODERN EXHAUST SYSTEMS, ESPECIALLY IN FRONT WHEEL DRIVE VEHICLES. THEY ARE DESIGNED TO ALLOW FLEX IN THE EXHAUST SYSTEM TO PREVENT HARD COMPONENTS FROM CRACKING OR BREAKING. THIS IS IMPORTANT ESPECIALLY IN FRONT DRIVE VEHICLES BECAUSE OF INCREASED STRESS ON THE EXHAUST DUE TO THE ENGINE AND TRANSMISSION LOCATION. THEY ARE TYPICALLY 4-10 INCHES IN LENGTH AND CONSIST OF THIN STAINLESS STEEL FORMED INTO AN ACCORDIAN SHAPE AND SURROUNDED BY BRAIDS OF STAINLESS STEEL WIRE MESH. OFTEN TIMES THESE FLEX PIPES ARE LOCATED WITH OTHER COMPONENTS, SUCH AS CATALYTIC CONVERTERS OR Y-PIPES, THAT MAKE THESE WHOLE PIECES COSTLY TO REPLACE. AT LOU’S CUSTOM EXHAUST WE CAN CUT OUT YOUR BROKEN FLEX PIECE FROM ITS LARGER COMPONENT AND WELD IN A NEW FLEX PIPE, WITHOUT HAVING TO REPLACE OTHER, MORE COSTLY, PARTS THAT ARE STILL IN WORKING CONDITION.