Home › Pontiac GTO › Cat-back exhaust
GTO · Sound
GTO Cat-back exhaust Install Guide
Your GTO
Pick your year to see what fits.
This page covers the US GTO.
+5–10 whp (est.)
Hard$1,600–$1,6002–3 hrs
Why do it
The sound the V8 should have had.
Tools you'll need
- Jack and 4 jack stands
- Socket set
- Torque wrench
- Penetrating oil
Starting out? See our budget tool list.
Parts to buy
- Borla S-Type cat-back 140165 Lists the 2005-2006 GTO. Same job as our video.Fits 2005–2006
Doesn't fit your car (0)
Double-check fitment before buying. We may earn a commission when you buy through these links, at no extra cost to you.
Steps
Remove the stock system
- Unhook the hangers and drop it.
Fit the mufflers
- Hang the mufflers and resonator.
Tighten and line up
- Line up the tips and tighten the clamps.
How to know it worked
- No exhaust leaks at the joints.
- Tips sit even in the bumper.
- Nothing touches the body.
Did this guide work for you?
Fixes from the community:
Suggest a fix
For:
Safety first
- Park on flat ground, set the parking brake and chock the wheels.
- Never get under a car held up only by a jack. Use jack stands.
- Let the engine and exhaust cool first.
- Disconnect the battery before unplugging electrical parts.
- Wear safety glasses.
- If something doesn't match your car, stop and ask a shop.
Follow your part's instructions and your service manual's torque specs.
Cat-Back Exhaust install guides for other cars