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Federal laws and state laws generally prohibit the use of sports engine headers in street vehicles. The two main reasons for this prohibition are the speed limit and the anti-pollution regulations. Vehicles with engine headers such as the Hedman Stepped Hedders are prohibited from roaming the streets and main highways to prevent accidents and pollution. If you were the driver of a vehicle that is capable of amazing acceleration, would you not be tempted to try driving it at full speed? Most probably, resisting the temptation would be hard especially if you are a teenager who is craving for some adventure. Driving a vehicle capable of high-speed gives some adrenaline boost.
Hedman Stepped Hedders can drastically increase the torque and horsepower of an ordinary engine. Hence, an ordinary street car can easily be converted into a high-speed get-away vehicle by criminals. This is one of the reasons why the sell and purchase of the Hedman Stepped Hedders is closely regulated by the federal and state agencies. This product is generally sold for sports use. Every unit has a unique identifying control number that can be traced.
The Hedman Stepped Hedder can fit 5.7L, V8, 4 Barrel engines. It has a tube size of 1.5” to 1.625” and collector size of 3”. It fits with angle port without producing smog emissions. Injection head modification, however, may be required to retain catalytic converter. It can easily fit with angle plug heads and Chevy aluminum; nonetheless, he A/C bracket must be modified.
The use of this product is legal only for racing and may never be used upon a highway. The sale and use of this product in California is illegal. Most people would be frustrated to know the legal limitations of using Hedman Stepped Hedders. However, there are perfectly logical reasons for the legal limitations.