Intake & Exhaust · 4 SKUs · 6 authorized brands

Breathe deep. Sound right.

Cold-air intakes, short-rams, headers, downpipes, and cat-back systems. CARB EO documented where legal, off-road only flagged where not — we don't hide it in the fine print. Every system ships with the gasket + hardware to actually finish the install.

From the bay

Marcus Tran

Chief installer · Apex Performance bay 4

I've installed enough exhaust systems to have an opinion: stainless 304 over 409 every time on a coastal car, mandrel-bent over crush-bent always, and don't trust a header that doesn't ship with a CARB EO number if you live in CA, NY, MA, or CO.

Tone matters too. We've recorded sound clips of every cat-back we stock from inside the cabin at 65 mph and from a 50-foot drive-by — ask in chat and we'll send the WAVs.

Authorized · This category

Intake + exhaust brands.

Borla and MagnaFlow for cat-back, Kooks for long-tube headers, AEM and K&N for intake. CARB EO documented at the SKU level — verifiable before checkout, every state.

Borla

Cat-back

AEM

Cold-air intakes

K&N

Air filters

MagnaFlow

Mufflers

Mishimoto

Intake piping

Kooks

Headers

Resources for this category

Sound clips, CARB lookup, drone-cancel scheduling.

CARB EO lookup by SKU

Verify before checkout, every state

Drone-cancel scheduling

Helmholtz resonator install — $185

Sound clip library

Cabin + drive-by recordings for every system

Frequently asked

What to know about intake + exhaust.

What does CARB EO mean and how do I verify?

CARB EO is a California Air Resources Board Executive Order — a part-specific exemption that makes the part 50-state legal. Look up the EO number for any SKU we sell at our CARB EO lookup tool. Carry the EO sticker in the glovebox if you live in a CARB state.

Will a cat-back exhaust make me lose power?

No — none of the cat-back systems we sell will cost you measurable power on a stock-tune car. Most show a small gain (+8 to +18 hp). The bigger gains come from headers + downpipes, which require a tune to compensate for changes upstream of the O2 sensors.

Long-tube vs. shorty headers?

Long-tube headers move more air and require a tune (the O2 sensor moves further from the head). Shorty headers bolt on without retune but make 60–70% of the long-tube gain. Pick long-tube if you’re planning to tune; shorty if you want bolt-on and a small bump.

Drone — how do I avoid it?

Drone is a Helmholtz resonance in the cabin between 1800 and 2400 RPM. Borla S-Type and AWE Track are our quietest cat-backs by drone metric. If you have a system that drones, we install Helmholtz resonators in the Charlotte bay for $185 — usually eliminates it completely.

Cold-air intakes and water — do I need a hydroshield?

Front-fender CAIs are below the bumper line on most chassis — hydrolock is a real risk in deep water. If you live in a flood-prone area or commute through standing water, get a hydroshield (sold separately) or run a short-ram instead. We’ll flag the SKU note on every CAI.

Build it. Run it harder.

Real flow. Right tone.

Authorized Borla + AEM + MagnaFlow + Kooks. CARB EO lookup, drone-cancel install, sound clip WAVs on request. Free ship over $200.

Shop parts Ask a tech

or call (704) 555-0177