Are straight pipe exhausts legal?

The law does not specifically answer how loud a motorized vehicle can be, but it does say that a vehicle must have a good working muffler that prevents “excessive or unusual noise.” So any cutouts or bypasses, straight pipes or rusted out mufflers and exhaust with holes are illegal.

Are straight pipes bad for your car?

… a race car style exhaust system is a bad upgrade for a street vehicle. A straight pipe, for example, can cause exhaust gas velocity to increase. This will likely reduce engine performance below 2,000 or 2,500 RPM, making your vehicle a little slower to launch from a stoplight.

Why is straight piping your car illegal?

Flames shoot out of a vehicles exhaust when unburned fuel is dumped into the exhaust system. How does fuel manage to get into the exhaust system? According to Car Throttle this is usually due to the removal of the catalytic convertor and adding straight pipes, making it you guessed it; illegal.

Are straight pipes legal in Australia?

Yes, as above, they are illegal. Not because of noise, but because you are changing the exhaust from the factory configuration. If the car had 4 mufflers from factory, it must have the same number in any aftermarket exhaust.

Does free flow exhaust damage engine?

But then these exhausts give you the decibels you are looking for, but the back force that the free flow exhausts causes, is not created in the engine. This results in a drop in the overall performance of the motorcycle.

Will straight pipe pass emissions?

Registered. Straight pipes as in no cats or straight pipes as in no mufflers? Mufflers are not a smog check item, anything behind the catalytic converters on the car are not considered emissions components and can be changed at will. (As long as you stay under the sound limits dictated by local ordinance…)

Can you pass emissions with a straight pipe?

Straight pipes as in no cats or straight pipes as in no mufflers? Mufflers are not a smog check item, anything behind the catalytic converters on the car are not considered emissions components and can be changed at will. (As long as you stay under the sound limits dictated by local ordinance…)