B58
B58 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,...
Technical guides
Guides
Fitment, materials, dyno data and tuning answers from the people who build the parts. Written by AZ Motorsport in Québec.
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.
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...
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...
AudiAudi R8 Exhaust System Upgrade Checklist: Valved Exhaust, Headers, Sound and Install Questions
Choosing an Audi R8 exhaust system? Use this checklist to compare a valved/F1 exhaust, race headers, or both, with install, sound, tune/CEL and Quebec...
AudiAudi RS5 Downpipe Install and Tune Checklist: B9/B9.5 Buyer Questions Before Ordering
Checklist for planning an Audi RS5 downpipe install, including B9/B9.5 fitment questions, catted vs catless planning, tune/CEL risk, Quebec daily-driver considerations and what to...
C63SMercedes C63S Downpipes: W205 vs W206 Fitment, Tune and CEL Checklist
Shopping for Mercedes C63S downpipes? Use this W205 vs W206 checklist to verify fitment, tune/CEL expectations, daily-use tradeoffs, and what to send AZ Motorsport...
