Frequently Asked Questions

At Lou's Custom Exhaust in Brockton, Massachusetts, we look at how much of the pipe or muffler is affected. A small hole or loose joint is usually repairable, but heavy rust across multiple sections calls for replacement.

A louder exhaust note usually points to a leak, a hole in the muffler, or a disconnected pipe somewhere in the system. The sound gets worse as the damage spreads, so it is worth having it checked early.

Reduced power, a rotten egg smell, poor fuel economy, and a check engine light are the most common signs. A rattling noise from underneath the car when the engine is cold can also point to internal damage.

Shocks control how your suspension absorbs bumps, while struts combine that function with structural support for the vehicle's weight and steering geometry. Which one your car has depends on its suspension design.

Squealing often comes from a wear indicator warning you that pads are getting thin, while grinding usually means the pads are gone and metal is contacting metal. Either sound means it is time for an inspection.

Squealing often comes from a wear indicator warning you that pads are getting thin, while grinding usually means the pads are gone and metal is contacting metal. Either sound means it is time for an inspection.

Beyond changing the sound, a well-designed custom exhaust can improve exhaust flow and reduce backpressure, which some drivers notice in throttle response. We build each system around your vehicle rather than using a one-size-fits-all kit.

Most drivers should have brake pads checked at every oil change or at the first sign of noise or a spongy pedal. Driving habits, terrain, and vehicle weight all affect how quickly pads wear down.

Repair addresses a specific issue like a leak or a loose bracket on an otherwise sound muffler. Replacement makes more sense once the metal has rusted through in multiple spots or the muffler no longer holds a weld.

A clogged or failing converter restricts exhaust flow, which forces the engine to work harder and burn more fuel to maintain performance. Fixing it early prevents that inefficiency from spreading to other engine components.

Excessive bouncing after a bump, a nose-dive when braking, uneven tire wear, and a generally rougher ride are the clearest signs. Our team at Lou's Custom Exhaust tests suspension response on every vehicle that comes into our Brockton shop.