Most new cars have sound deadening in the engine bay, usually older cars are pretty open under the hood. Older cars have solid lifters and no roller valve train making things a lot louder. But as decades go by, engines get worn and holes rust, causing them to get louder.

Sometimes the loud engine sounds you hear aren’t due to the engine having a problem at all. Instead, it could be caused by a damaged or failing muffler. If it just seems like your car is running louder than it used to, but there aren’t other strange sounds, it might be due to a damaged muffler.

the sound comes from the aggressive camshaft offset lobe that controls the intake and exhaust valves combined with the inability of high flow carburetor to deliver smooth fuel flow at very small airflow rates. modified cars sacrifice a smooth idle to have more power in the high rpm’s.

A vehicle’s sound is primarily impacted by the engine and exhaust systems installed. Larger volume engines produce more exhaust, which typically deepens the sound and increases the audible volume. With a given engine, the style of exhaust and specific components used may be altered to change the sound presence.

The shape and width of the exhaust tip can slightly change the sound to be either more throaty (larger tips) or raspy (smaller tips). On their own, though, muffler tips will have a minimal effect on exhaust sound.

In comparison to single exhausts, however, dual exhausts are going to have that loud, throatier sound note that muscle car enthusiasts crave. An H-pipe dual exhaust will emit that smooth, classic old-school muscle sound while the X-pipe will produce a louder, raspier tone.

Drilling holes in your exhaust will definitely make your car louder. By doing so, you allow some sound waves to escape before they are silenced by the muffler. It’s important to drill holes at the right location to prevent damage to the car.

It will probably add about 30-35 hp depending on the tip, the bigger the tip the more hp you can expect to add. No you wont gain anything from just a “muffler tip”.

The Most You Can Gain is 2-5% If you want to know how much power you can expect to gain from adding an exhaust system to your car, assume that your engine will get 2-5% more powerful. More specifically, large engines like a big 6.0L V8 typically see about a 2%-3% horsepower increase.

Louder exhaust does not use more fuel. In fact- there’s no correlation between them. A car engine creates combustion to deliver power – which generates a lot of noise. An exhaust system is equipped with a muffler to reduce this noise.

Putting straight pipes on your truck, or decreasing your “back pressure” will not hurt your engine or performance.

Does straight pipe use more gas? Straight pipe will not lower your gas mileage but will maintain it and just give your car better performance. Straights can create better flow of exhaust gas but I’m not sure if it can increase fuel mileage. The only thing you would change is the sound.

The cost to straight pipe in is mostly depending on the city you live in and the brand of vehicle you have. On average it will around $1000 to $1500 to straight pipe your car.

rickyracer1962 legal limit is 95 db, wondering how loud that really is.

Vehicles with a removed catalytic converter have experienced a significant increase of horsepower. This has been made possible because the catalytic converter creates a considerable source of back-pressure on the engine. Without the catalyst’s limiting effects, the engine can now operate and use its optimum horsepower.

Some garages will etch a unique serial number onto your catalytic converter so it can be easily identified if it is stolen. You’ll also be provided with a sticker to be displayed in your window that indicates your catalytic converter is marked – which prevents offenders from targeting your vehicle.

Which Catalytic Converters Are The Most Expensive? According to data from 2020, the most expensive catalytic converter belonged to the Ferrari F430, with a mind-popping $3,770.00 price tag. Moreover, the F430 needed two of them, so a full replacement would run car owners $7,540 before labor costs.

Depending on which metal was used, thieves can sell the converters to metal recyclers for $20-$200. The recyclers then extract the metal and resell it for as much as $6,000 an ounce, as in the case of rhodium.

Fortunately, there is an insurance type that pays for these problems. Comprehensive car insurance covers theft-related problems, including stolen cars and stolen car parts (like a catalytic converter).

Catalytic converters contain Platinum, Rhodium and Palladium. However, there is no gold in catalytic converters. Content will vary significantly depending on the vehicle model, but on average the ceramic weight is approximately just less than 1 kg, and the precious metal content is between 0,2% and 0,5%.