The cooler the engine bay, the more efficient the engine will perform. Wrapping the exhaust system entirely will also allow a better gas flow rate, therefore producing more bhp. Titanium Exhaust Heat Wrap.
Titanium 5M Exhaust Heat Wrap High Temp Manifold - Perfromance Exhaust Shields
Titanium 10M Exhaust Heat Wrap High Temp Manifold, Perfromance Exhaust Shields
Titanium Performance Exhaust Heat Wrap Tape 50ft Roll 2" Wide - DEI D40010127
Titanium Performance Exhaust Heat Wrap Tape 50ft Roll 1" Wide - DEI D40010126
Pitking Products 2 Inch x 50ft Volcano Titanium Exhaust Heat Wrap