Exhausts that sound right
and pass rego.
Cat-back and turbo-back systems — fitted from brands we trust or fabricated on our own TIG bench. Every system gets noise-tested before it leaves, because a defect sticker ruins the whole point.
Flow, sound and the letter of the law
A good exhaust does two things: lets the engine breathe and sounds like the car should've sounded from the factory. A bad one drones at 110 on the motorway and gets you a yellow sticker.
We fit proven off-the-shelf systems for most popular cars, and for anything unusual Coop fabricates custom systems in-house — mandrel bends, TIG welds, proper hangers that don't snap in six months.
Queensland has real noise limits and they do get enforced. We test every system with a meter on the way out, and if what you want won't pass, we'll show you the valved options that give you quiet on the street and loud on command.
Pricing
AUD, GST included. Fixed quote before the car comes in — the number doesn't move after.
| Job | Includes | From |
|---|---|---|
| Cat-back system (supply + fit) | Proven brands, bolt-on fit, noise-tested on the way out | $1,450 |
| Turbo-back system | Full system incl. downpipe — where the real flow gains live on a turbo car | $2,400 |
| Custom fabricated system | Mandrel-bent, TIG-welded, built in-house for your car | $2,900 |
| Valved system | Quiet mode for the street, loud mode on command — best of both | $3,200 |
| Resonator / drone fix | Kills motorway drone on an existing system without gutting the sound | $480 |
| Fit customer-supplied system | Labour only — fitted as-supplied, noise-tested, hangers checked | $390 |
Prices swing on parts — a titanium system for a BMW and a stainless cat-back for a Golf are different animals. Quotes are fixed after we see the car.
From cardboard box to cold start
One to two days on the hoist. Here's how it runs.
Ask about yoursWhat do you want it to sound like? We play you examples and agree on the target before anything gets ordered.
Old exhaust off, hangers and flanges inspected. Rusty hardware gets replaced, not fought back on.
Bolt-on system goes up, or Coop builds the custom one on the bench — bends, welds, fit-check, repeat.
Tips centred, clearances checked, joints sealed. A rattling exhaust is a job done twice — we do it once.
Meter out, measured to the QLD standard. If it doesn't pass, it doesn't leave — that's the deal.
You get to hear it fire up. Everyone films this bit — we're used to it.
The other five services
Fresh off the bench
Systems we've fitted or built lately — the welds get photographed almost as much as the cars.
3-inch, mandrel-bent, for an S15 that couldn't buy one off the shelf.
Valved system — quiet for the commute, angry for the weekend.
Full system + retune. Picked up 18kW over the cat-back alone.
Coop runs
the TIG bench
Our fabricator is a boilermaker by trade who's been welding for eleven years. If your car needs something that doesn't come in a box — odd engine bay, custom routing, a system that clears the diff properly — he builds it.
His welds are the kind other fabricators photograph. He's modest about it, which is annoying because he's earned the right not to be.
Exhaust questions
Something else on your mind? Ring +61 2 4961 8527 — quickest answer is still the phone.
All six, side by side
Not sure which job your car actually needs? This table's the honest shortcut.
| Service | Best for | Time | From |
|---|---|---|---|
| ECU Remapping | Cheapest power per dollar — most turbo cars | 1 day | $890 |
| Dyno Tuning | Diagnosing, proving, dialling in existing mods | 2–4 hrs | $330 |
| Performance Exhausts this page | Sound + flow, pairs well with Stage 2 | 1–2 days | $1,450 |
| Turbo & Supercharger | Big numbers — 40–80% gains | 3–7 days | $4,900 |
| Suspension & Handling | Putting the power down, corner speed | 1–2 days | $1,200 |
| Brake Upgrades | Stopping the extra speed, track work | Same day | $950 |
Hear it first.
Pay for it once.
Ring +61 2 4961 8527 or send the form on the contacts page — tell us the car, we come back with a fixed quote and the next free slot.