Different shapes of car exhaust tips can have some impact on exhaust, although the effects might be relatively minor, they are still worth noting. Here are several types of exhaust tips and their potential effects:

Straight Pipe Exhaust Tips:

Straight pipe exhaust tips typically have a simple cylindrical shape, allowing for smooth exhaust flow, but they may generate higher exhaust noise.

Diffuser Exhaust Tips:

Exhaust tips with diffusers can help guide the exhaust gas flow, increasing exhaust velocity and reducing exhaust pressure, thus aiding in improving engine performance.

Beveled Exhaust Tips:

Beveled exhaust tips alter the direction of the exhaust gas flow, reducing exhaust resistance, and potentially lowering exhaust noise.

Dual Outlet Exhaust Tips:

Dual outlet exhaust tips typically feature two exhaust outlets, increasing exhaust flow, but they may increase the vehicle's exhaust noise.

Noise Reduction Exhaust Tips:

Exhaust tips designed to reduce noise might incorporate internal soundproofing structures or other sound-absorbing materials to decrease exhaust noise generation.

Overall, different shapes of car exhaust tips may have some influence on exhaust flow and noise, although these effects are generally relatively minor. Therefore, vehicle manufacturers typically consider a balance of performance, noise, exhaust flow, and other factors when designing exhaust tips to meet the overall requirements of the vehicle.