DEI Heat & Sound Control — Exhaust Wrap & Shields

DEI Heat & Sound Control — Exhaust Wrap & Shields

DEI (Design Engineering Inc.) has been producing automotive heat and sound control products for over 25 years, creating thermal wraps, exhaust heat shields, heat blankets, acoustic damping mats, and firewall insulation for performance street cars, race vehicles, and marine applications. DEI products address the heat and noise that performance builds generate, protecting nearby components and improving cabin comfort without adding significant weight.

Popular Upgrades

DEI Titanium exhaust wrap is the most popular product in the DEI catalog, reducing radiated heat from headers and exhaust pipes to protect nearby fuel and brake lines while also slightly improving exhaust gas velocity by keeping temperature higher in the pipe. DEI Gold Heat Shield is widely used to protect fuel rails, brake lines, and electrical harnesses routed near exhaust manifolds and turbocharger housings. Reflect-A-Gold insulation and EzCool acoustic mats are popular for firewall and floor pan heat and sound reduction in performance street builds.

What is the best DEI product for protecting fuel lines near headers?

DEI Reflect-A-Gold heat shield material is the most effective solution for protecting fuel lines and electrical harnesses near headers. The aluminized Mylar surface reflects radiated heat away from the protected component, while the fiberglass mat backing provides additional insulation. DEI lava rock heat shield sleeving is an alternative for routing individual hoses or wires through high-heat zones without bulk packaging.

Does exhaust wrap actually improve performance?

Exhaust wrap retains heat in the exhaust gas as it travels from the headers to the atmosphere, which maintains higher gas velocity and reduces exhaust backpressure slightly. Independent tests show horsepower gains of 3 to 6 horsepower on some naturally aspirated V8 configurations from wrapping headers. On turbocharged engines, wrapping the hot-side exhaust piping from the manifold to the turbo inlet is more impactful because it keeps exhaust gas temperature high at the turbine wheel, improving spool response.

Find DEI heat management products at Black Ops Auto Works. Browse our exhaust systems, air intake systems, and suspension upgrades for your complete performance build.