Manifold Cons:

• Sacrificed horsepower and torque – The utilitarian design was built for cost savings, not performance

Header Pros:

• Designed for ultimate flow
• Designed for prime backflow pressure
• Control where you want your power increase (high end or low end)
• Add coatings to control heat dissipation
• Lighter weight than manifolds
• Increased horsepower and fuel efficiency

Header Cons:

• Sound Decibel Levels Are Higher – may be too loud for cruising
• Engine Compartment fitment may be tighter

H-Pipes

An H-Pipe is shaped like the letter H, and relies on exhaust expansion to balance the cylinder banks. A section of tubing in between the main pipes provides an area for gases to expand into during exhaust pulses. Only a small amount of exhaust flows from one stream to the other as both sides push back and forth in the center section. Gains in performance are noticed from a low RPM and give the exhaust a deeper, old American muscle car tone.

X-Pipes

An X-Pipe is shaped like the letter X, and allows the exhaust to flow down the path of least resistance. At lower revs, turbulence is formed as exhaust gases try to shuffle past a second column of gases coming from the other side. While producing more power than the restrictive factory system, the potential gains are not seen until higher RPMs are reached. This is where an X-Pipe stands apart from the rest. Exhaust gas is pushed out harder as the engine spins faster. The X-Pipe merges the turbulence into two uniform streams, for a smooth flow to the tailpipes. Both streams keep each other up to speed, which draws even more spent exhaust out the cylinders. X-Pipes provide a boost in horsepower and a higher exotic car tone.

Mufflers

When Corvette manufactures design a muffler system, cost is a big factor in determining the final style. The original system will provide great looks and function properly for years of road trips. However, there is a lot of room for improvement if you choose to put on a custom muffler system. One advantage of aftermarket exhaust is that you can tailor the system to meet your needs. Be sure to consider the following:

• Decibel level – Mid America Motorworks has created an IAC Exhaust Rating Chart to help you choose the right exhaust based on tone during idle, acceleration and cruise.
• Tone – Different brands usually have distinct tones. The tone that's right for you depends on your personal preference.
• Tip Number – Corvette exhaust is available in dual or quad tips.
• Tip Size – Personal preference is once again a factor in deciding muffler tip size. Tips can range from 2" to 4.5" and can alter the idle tone of your exhaust.
• Tip Shapes & Color – Complement your Corvette's exterior with custom tip shapes and polished or black finish options.