Kline Innovation Exhaust System (991 Turbo)

Product Details

Capitalizing on the design innovations and success of Kline’s 996 and 997 range, the bar for designing the Kline 991 turbo exhaust had been set high. Their trademark perfect x pipe geometry, harmonically tuned silencer geometry, Inconel 625, and their proprietary acoustic silencer packing materials result in a system that has become famous for that perfect sound. Zero drone, and a raised pitch raucous incendiary howl in higher rpms and hard throttle. The design is so perfect, that you can even run cat-less versions silently at cruising speeds, only unleashing that howl when you drive the car hard.

During development there were some clear evolutionary design steps that we could incorporate. The secondary tail pipe allowed us to integrate an effective gas overflow system. The concept was conceived at the fluid dynamic modeling stage, and effectively works to cut low rpm  noise, while allowing an effective increased cross section at higher rpms producing a more accentuated Jekyll and Hyde personality, and slightly broader torque curves. For a similar system, check out the iPE F1 exhaust.

Performance

Preliminary testing indicates a maximum power gain for the decat variant in the region from 35-45whp and 55-65nm torque.

Specs

Cross Section

• De-cat cross section 70mm OD specifically chosen for a balance of peak torque and power
• Silencer section, cross section 65mm OD and 44mm OD overflow
• Catalysts come in a 108mm OD to 127mm OD

Materials

Standard 304 grade Stainless Steel

Weight

• Decat - 12.5kg
• 100 Cell - 14kg

Inconel 625, formula one grade exhaust material.

Weight

• System 7.5kg

BUILD TIME

304 STAINLESS

• Total - 14 hours

INCONEL 625

• Total - 30 hours