No two cars, trucks or SUVs are exactly the same, so it is impossible to give an exact number for your vehicle. However, the general rule of thumb is that a performance exhaust system will free up an extra 5 - 20% in horsepower. A Ford F-150 with a 4.6L Triton V-8 engine, for example, could see power gains of up to 46 horsepower. Plus, if you add a pair of performance headers into the equation, you can expect an additional improvement of 10 - 20 horsepower.
For the greatest horsepower and torque gains, you'll want to install both a performance exhaust system and a pair of headers. You'll almost double the power gains by upgrading the two parts at the same time. Plus, most of our manufacturers make matching pipes and headers, so you can get a complete system that's been engineered to maximize the wheel-spinning power output.
The best part about a performance exhaust system is that it delivers serious power boosts while also improving your engine's overall efficiency. In effect, a performance exhaust allows your motor to breathe easier, so it can work strong without having to gasp for air. Depending on your driving habits, you can expect a fuel savings of around 1 - 2%.
No. Thanks to the Magnuson-Moss Warranty Act of 1975, your auto dealer cannot deny you warranty coverage if you have installed aftermarket parts, unless it is determined that the part caused or contributed to the failure in your vehicle. So, if your water pump stops pumping while your car is under warranty, the dealer cannot refuse service because you have upgraded your exhaust system.
Unless clearly stated otherwise, our performance exhaust systems are completely street legal. The reason is that our performance pipes are "Catback" systems, which means that they retain your factory-installed catalytic converter. Without the catalytic converter, your vehicle would not be street legal, and you would not be able to pass a smog test. It should be noted, however, that just because the product is street legal, it does not mean that your vehicle cannot still fail a smog test due to other issues (e.g. a failed oxygen sensor or a faulty gas cap).
When a performance product is said to be "street legal," it means that your vehicle will still be able to pass a smog test after the part is installed. Some performance parts are designed for "off-road" uses (e.g. racecars, show cars and vintage cars), and installing them onto normal cars, trucks and SUVs will cause that automobile to fail a smog test. Fortunately, our performance exhaust systems are perfectly legal because they retain your factory-installed catalytic converter. Moreover, our performance headers are all CARB approved, so they too are completely legal and will not disqualify you from passing smog.
No. When it comes to pipe size, bigger does not necessarily mean better. Stock exhaust systems often use piping that is too small, which causes restrictions and back pressure that cause you to lose horsepower. On the other hand, if you use pipes that are too large for your engine, the exhaust will not be able to scavenge properly, which will cause you to lose power and efficiency. Performance exhaust systems are sized for your exact year, make and model, so you get piping that is sized just right.
The main difference between the two metal types is pricing and durability. Aluminized steel is more economical to produce than stainless steel. However, stainless steel is naturally stronger, more durable and longer lasting than aluminized steel. Because of its high concentration of chromium, stainless steel has an extreme resistance to oxidation (rust). Aluminized steel has good corrosion resistance as long as the aluminum coating remains intact. If it gets scratched or damaged, aluminized steel will begin to corrode, though still at a slower rate than factory-installed exhaust systems.
Yes! We highly recommend that you run tailpipes out from under the vehicle. Not only does this keep exhaust fumes from rolling up into your cockpit, it also minimizes the amount of sound transmitted in your car. Besides, you'll want to show off your shiny new chrome tailpipe tips.
CARB is an acronym for the California Air Resource Board, which is California's regulatory agency tasked to set the state's acceptable automotive emissions levels. Most performance exhaust systems are built to meet CARB's strict requirements.
Headers usually have a CARB EO# stamped somewhere on them. They have these because when your vehicle undergoes a smog test, it must pass both a mechanical and a visual inspection. A set of performance headers bolted onto your engine block could be grounds for a failure of the visual inspection, unless you have a CARB EO# prominently displayed right on the headers. If your vehicle qualifies for off-road status, then it does not matter.