Why Do Exhausts Rust?
Rust comes from road salt, trapped moisture and short winter trips. Which materials resist it best, and what you can do to slow it...
Technical guides
Guides
Fitment, materials, dyno data and tuning answers from the people who build the parts. Written by AZ Motorsport in Québec.
Exhaust SystemsAre Aftermarket Exhausts Reliable?
Aftermarket exhaust reliability depends on material, weld quality, hanger design, fitment accuracy and installation. Here is what separates systems that last from systems that...
Exhaust SystemsIs a Loud Exhaust Legal in Quebec?
What drivers in Quebec should know about exhaust noise rules and vehicle inspection, and what to confirm before buying a louder system.
DownpipesWhat Is a High-Flow Cat?
A high-flow cat is a less restrictive catalytic converter. Here is what that means for sound, smell, check engine lights, legality and tune planning...
Exhaust SystemsDo You Need an Exhaust for Winter Driving?
You usually do not need a different exhaust just because you drive through winter. What matters is material choice, clean installation, and road salt...
Exhaust SystemsDoes a Cat-Back Exhaust Add Horsepower?
A straight answer on what a cat-back exhaust really changes on your car, where any power gain comes from, and what matters far more.
B58B58 Gen 3 Downpipe Checklist: M340i, M440i, Tune and Fitment Questions
Shopping for a B58 Gen 3 downpipe? Use this M340i/M440i checklist to confirm Gen 1 vs Gen 2 vs Gen 3 fitment, catted-vs-catless choices,...
DownpipesMcLaren 600LT/675LT Downpipes vs X-Pipe Exhaust: Tune, CEL and Fitment Checklist
Compare McLaren 600LT/675LT downpipes with a 600LT X-pipe exhaust by sound, tune/CEL planning, catted-vs-catless choice, fitment checks and Quebec install questions.
8VAudi RS3 Downpipe Install Cost, Tune and CEL Checklist: 8Y/8V Buyer Questions
Pricing an Audi RS3 downpipe install? Use this 8Y/8V checklist to plan quote factors, tune/CEL risk, catted vs catless choices and fitment before booking.
DownpipesFerrari Purosangue Exhaust vs Downpipes: Sound, Valves, Fitment and Buyer Checklist
Choosing between a Ferrari Purosangue exhaust and downpipes? Use this AZ Motorsport checklist to compare sound, valves, fitment, tune/CEL planning and Quebec/Canada ordering questions...
DownpipesMercedes GLE63 Downpipes Checklist: W167 Fitment, Tune and CEL Questions Before Ordering
Shopping for GLE63 downpipes? Use this W167 checklist to confirm fitment, tune/CEL planning, catted vs catless choice, install prep and Quebec ordering details before...
BrossardModified Exhaust Quebec Checklist: Questions to Ask Before You Buy, Build or Book
Planning a modified exhaust in Quebec? Use this checklist to compare repair, fabrication, cat-back systems, downpipes, headers, drone, CEL risk, quote scope and local-use...
