Compliance
Are Cat-Back Exhausts Legal?
Cat-back exhausts can be street-friendly, but buyers should check noise, retained emissions equipment, installation quality and local rules before ordering.
Technical guides
Guides
Fitment, materials, dyno data and tuning answers from the people who build the parts. Written by AZ Motorsport in Québec.
Exhaust SystemsWhat Is a Catback Exhaust?
A catback exhaust replaces the rear section after the catalytic converter. Learn what it includes, what it changes, and how to choose one for...
Exhaust SystemsDoes a Performance Muffler Add Power?
A performance muffler can help flow when the stock muffler is restrictive, but the real result depends on the full exhaust setup, tune, fitment...
Exhaust SystemsDoes a Shorter Exhaust Add Power?
A shorter exhaust can help only when it removes a real restriction. Learn how length, diameter, sound, fitment and tuning work together before choosing...
Exhaust SystemsAre Exhaust Systems Covered Under Warranty?
Exhaust warranty coverage depends on the part, installer, warranty terms, and cause of failure. Learn what is usually covered before buying or booking exhaust...
Exhaust SystemsDoes an Exhaust System Increase Horsepower?
An exhaust can help power, but gains depend on the full setup, restrictions and tuning. Learn what changes before you expect big numbers.
Exhaust SystemsWhy Do Tuned Cars Pop?
Tuned cars usually pop because a tune lets a small amount of fuel burn late during throttle lift, so combustion finishes in the hot...
Exhaust SystemsDoes Tuning a Car Make It Faster?
A practical guide to whether tuning a car can make it faster, what parts affect the result, and what to check before tuning.
Exhaust SystemsHow to Quiet a Loud Exhaust System?
A loud exhaust can come from parts, leaks or missing resonators. Learn the practical ways to reduce noise without guessing.
Exhaust SystemsHow Much Does Exhaust System Cost?
Exhaust cost depends on materials, fitment and installation work. Learn what affects price before you compare parts or book a shop.
Exhaust SystemsWhy Is Damage to Exhaust System a Danger?
Exhaust damage can leak fumes, add noise and leave parts loose under the car. Learn the warning signs and when to book an inspection.
DiagnosticsWhat Does Exhaust System Warning Light Mean?
An exhaust warning light can point to sensors, emissions parts, leaks or engine faults. Use this guide to decide when to scan, inspect or...
