QTP

Want an exhaust that can be quiet on the motorway and open whenever you like? QTP, also known as Quick Time Performance, makes exhaust cutouts that let you control the sound and flow of your exhaust. Here you'll find electric and manual cutouts, valves and matching pipes and fitting parts for many cars and trucks.

American exhaust cutout specialists

QTP is an American brand that has made exhaust cutouts its speciality. A cutout is a valve fitted to the exhaust pipe ahead of the muffler that can be opened so the exhaust gas takes a shorter route out. This gives a louder sound and less back pressure when the valve is open, while the car runs as normal when it is closed. The solution is popular among owners of American V8 cars and trucks, many of whom want both a calm daily driver and the option of a more open sound.

QTP's key products

Electric cutouts are the core of the range. They are operated with a switch or remote, so you can open and close the valve from the driver's seat. There are round models in several pipe diameters and low-profile oval versions for cars with little space under the floor. Manual bolt-on cutouts are a simple option where the cover is opened and closed at the car. QTP also offers kits with two valves, Y-pipes and accessories such as wiring harnesses and switches. See each product for pipe diameter and vehicle fitment.

Buy QTP from us

We specialise in performance parts and know what it takes for a project to succeed. You get a wide selection, competitive prices and personal service if you have questions along the way. Find the QTP solution for your project and take the next step towards more performance.

Frequently asked questions

What does an electric exhaust cutout do?

An electric cutout is a motor-driven valve on the exhaust pipe. When it opens, part of the exhaust gas bypasses the muffler, making the sound louder. When closed, the car runs with its normal exhaust.

Where is a cutout usually fitted?

Usually on the exhaust pipe after the manifold or headers and before the muffler, often via a Y-pipe. The exact position depends on the car and the space under the floor.