Maybe 1-3 HP and possibly up to 7 with the addition of an air intake system. But every company out there will give you different statistics. If you lower the back pressure too much by increasing the piping in the exhaust system you can expect a loss in low end power.
5-15+ depending on vehicle and type of headers.
It does depend on the engine, but I'd shoot a little higher and say headers will give a good 15-30 hp 3 or 4 hp depending on the engine
About 6 to 12 hp. But that is still dependent to the type of the throttle body that you will use and with the response of the air flow to the engine. Note that oftentimes, throttle body somehow acts like a carburetor in a non-injected engine.
depending on the style of intake, and type of car you can gain up to around 20% hp
Unless your vehicle has a built in amplifier or your installing an aftermarket one then you can leave it off. A remote wire will turn on an audio accessory if you have one.
There is no set amount of horsepower in a tank of NOS. NOS is an oxidizer that means it allows your fuel to be burned more quickly. The increase in horsepower depends on the quality of the engine. consult a master certified auto technician before installing a NOS system in your vehicle.
The 1998 to 2002 Chevrolet Camaro was equipped with the General Motors Vehicle Anti-Theft System (VATs). Disabling VATS, such as when installing an aftermarket remote starter) involves installing a resistor in the lock cylinder assembly. However doing so will weaken the vehicle's security against theft.
headers are street legal ,as long as they are installed on an exhaust system with the proper emission control , and mufflers. open headers without cats, and mufflers are not street legal. if the vehicle is pre 1968, only mufflers, are required as cats were not in use at that time.
Equipment that does not come stock on the vehicle.
967
base horsepower
The answer depends upon the displacement of the engine, type of piping used, composition of the muffler, exhaust type, and whether the vehicle is naturally aspirated or uses forced induction.